/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:30:34,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:30:34,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:30:34,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 22:30:34,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 22:30:34,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 22:30:34,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 22:30:34,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 22:30:34,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 22:30:34,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 22:30:34,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 22:30:34,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 22:30:34,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 22:30:34,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 22:30:34,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 22:30:34,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 22:30:34,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 22:30:34,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 22:30:34,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 22:30:34,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 22:30:34,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 22:30:34,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 22:30:34,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 22:30:34,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 22:30:34,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 22:30:34,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:30:34,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:30:34,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:30:34,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-10-13 22:30:34,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:30:34,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:30:34,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 22:30:34,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 22:30:34,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:30:34,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:30:34,851 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:30:34,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:30:34,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:30:34,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:30:34,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:30:34,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:30:34,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:30:34,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:30:34,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:30:34,852 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:30:34,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:30:34,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:30:34,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:30:34,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:30:34,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:30:34,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:30:34,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:30:34,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:30:34,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:30:34,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:30:34,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:30:34,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:30:34,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:30:34,854 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:30:34,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 22:30:34,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:30:35,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:30:35,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:30:35,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:30:35,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:30:35,165 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:30:35,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2021-10-13 22:30:35,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92b22638d/d8a9953984b54baab26ff024ad34605a/FLAG6f024e06c [2021-10-13 22:30:35,630 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:30:35,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2021-10-13 22:30:35,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92b22638d/d8a9953984b54baab26ff024ad34605a/FLAG6f024e06c [2021-10-13 22:30:35,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92b22638d/d8a9953984b54baab26ff024ad34605a [2021-10-13 22:30:35,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:30:35,653 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:30:35,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:30:35,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:30:35,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:30:35,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:30:35" (1/1) ... [2021-10-13 22:30:35,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca6d8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:35, skipping insertion in model container [2021-10-13 22:30:35,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:30:35" (1/1) ... [2021-10-13 22:30:35,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:30:35,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:30:35,987 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i[30286,30299] [2021-10-13 22:30:36,003 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i[31040,31053] [2021-10-13 22:30:36,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:30:36,011 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:30:36,043 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i[30286,30299] [2021-10-13 22:30:36,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i[31040,31053] [2021-10-13 22:30:36,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:30:36,078 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:30:36,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36 WrapperNode [2021-10-13 22:30:36,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:30:36,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:30:36,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:30:36,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:30:36,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:30:36,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:30:36,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:30:36,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:30:36,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:30:36,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:30:36,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:30:36,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:30:36,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (1/1) ... [2021-10-13 22:30:36,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:30:36,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:36,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 22:30:36,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 22:30:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-10-13 22:30:36,279 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-10-13 22:30:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-10-13 22:30:36,279 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-10-13 22:30:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:30:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 22:30:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:30:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:30:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:30:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 22:30:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:30:36,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:30:36,281 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 22:30:36,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:30:36,531 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 22:30:36,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:36 BoogieIcfgContainer [2021-10-13 22:30:36,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:30:36,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:30:36,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:30:36,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:30:36,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:30:35" (1/3) ... [2021-10-13 22:30:36,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c79a98c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:30:36, skipping insertion in model container [2021-10-13 22:30:36,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:36" (2/3) ... [2021-10-13 22:30:36,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c79a98c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:30:36, skipping insertion in model container [2021-10-13 22:30:36,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:36" (3/3) ... [2021-10-13 22:30:36,539 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-2.i [2021-10-13 22:30:36,542 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 22:30:36,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:30:36,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 22:30:36,543 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:30:36,559 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,560 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,560 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,560 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,560 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,560 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,560 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,560 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,561 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,561 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,561 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,561 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,561 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,561 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,562 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,562 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,562 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,562 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,563 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,563 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,563 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,563 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,564 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,564 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,564 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,564 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,564 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,565 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,565 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,565 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,565 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,565 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,569 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,569 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,569 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,569 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,569 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,572 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,572 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,572 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,572 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,572 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,572 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,582 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,582 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,582 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,582 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,582 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,582 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:36,584 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:30:36,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:30:36,644 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 22:30:36,644 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 22:30:36,679 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-10-13 22:30:36,729 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:36,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 22:30:36,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:36,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:36,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:36,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:36,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1527992754, now seen corresponding path program 1 times [2021-10-13 22:30:36,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:36,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717627264] [2021-10-13 22:30:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:36,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:37,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:37,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717627264] [2021-10-13 22:30:37,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717627264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:37,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:37,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:30:37,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079452894] [2021-10-13 22:30:37,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:30:37,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:37,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:30:37,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:30:37,106 INFO L87 Difference]: Start difference. First operand has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:37,237 INFO L93 Difference]: Finished difference Result 1756 states and 4724 transitions. [2021-10-13 22:30:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 22:30:37,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 22:30:37,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:37,256 INFO L225 Difference]: With dead ends: 1756 [2021-10-13 22:30:37,256 INFO L226 Difference]: Without dead ends: 1425 [2021-10-13 22:30:37,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:30:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-10-13 22:30:37,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-10-13 22:30:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 2.7184986595174263) internal successors, (3042), 1119 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-10-13 22:30:37,370 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-10-13 22:30:37,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:37,370 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-10-13 22:30:37,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-10-13 22:30:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 22:30:37,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:37,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:37,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:30:37,376 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:37,378 INFO L82 PathProgramCache]: Analyzing trace with hash 728020066, now seen corresponding path program 1 times [2021-10-13 22:30:37,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:37,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368718424] [2021-10-13 22:30:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:37,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:37,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:37,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368718424] [2021-10-13 22:30:37,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368718424] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:37,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:37,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:30:37,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443802895] [2021-10-13 22:30:37,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:30:37,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:30:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:30:37,510 INFO L87 Difference]: Start difference. First operand 1120 states and 3042 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:37,583 INFO L93 Difference]: Finished difference Result 2025 states and 5412 transitions. [2021-10-13 22:30:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:30:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 22:30:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:37,590 INFO L225 Difference]: With dead ends: 2025 [2021-10-13 22:30:37,590 INFO L226 Difference]: Without dead ends: 1758 [2021-10-13 22:30:37,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:30:37,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2021-10-13 22:30:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1270. [2021-10-13 22:30:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 2.7328605200945626) internal successors, (3468), 1269 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3468 transitions. [2021-10-13 22:30:37,619 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3468 transitions. Word has length 37 [2021-10-13 22:30:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:37,620 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 3468 transitions. [2021-10-13 22:30:37,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3468 transitions. [2021-10-13 22:30:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 22:30:37,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:37,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:37,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:30:37,622 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:37,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:37,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1321610138, now seen corresponding path program 1 times [2021-10-13 22:30:37,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:37,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906492157] [2021-10-13 22:30:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:37,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:37,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:37,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906492157] [2021-10-13 22:30:37,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906492157] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:37,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:37,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:30:37,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181662602] [2021-10-13 22:30:37,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:30:37,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:37,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:30:37,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:30:37,716 INFO L87 Difference]: Start difference. First operand 1270 states and 3468 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:37,785 INFO L93 Difference]: Finished difference Result 2062 states and 5444 transitions. [2021-10-13 22:30:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:30:37,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 22:30:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:37,791 INFO L225 Difference]: With dead ends: 2062 [2021-10-13 22:30:37,791 INFO L226 Difference]: Without dead ends: 1758 [2021-10-13 22:30:37,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:30:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2021-10-13 22:30:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1397. [2021-10-13 22:30:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.683381088825215) internal successors, (3746), 1396 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3746 transitions. [2021-10-13 22:30:37,818 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3746 transitions. Word has length 37 [2021-10-13 22:30:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:37,818 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 3746 transitions. [2021-10-13 22:30:37,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3746 transitions. [2021-10-13 22:30:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 22:30:37,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:37,821 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:37,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:30:37,821 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:37,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:37,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1681354572, now seen corresponding path program 2 times [2021-10-13 22:30:37,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:37,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055722779] [2021-10-13 22:30:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:37,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:37,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:37,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055722779] [2021-10-13 22:30:37,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055722779] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:37,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:37,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:30:37,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668660750] [2021-10-13 22:30:37,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:30:37,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:30:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:30:37,896 INFO L87 Difference]: Start difference. First operand 1397 states and 3746 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:37,982 INFO L93 Difference]: Finished difference Result 2318 states and 6148 transitions. [2021-10-13 22:30:37,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 22:30:37,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 22:30:37,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:37,990 INFO L225 Difference]: With dead ends: 2318 [2021-10-13 22:30:37,990 INFO L226 Difference]: Without dead ends: 1987 [2021-10-13 22:30:38,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:30:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-10-13 22:30:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1514. [2021-10-13 22:30:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.701916721744878) internal successors, (4088), 1513 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-10-13 22:30:38,035 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-10-13 22:30:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:38,037 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-10-13 22:30:38,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-10-13 22:30:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:38,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:38,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:38,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 22:30:38,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:38,040 INFO L82 PathProgramCache]: Analyzing trace with hash -360140322, now seen corresponding path program 1 times [2021-10-13 22:30:38,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:38,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745850789] [2021-10-13 22:30:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:38,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:38,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:38,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745850789] [2021-10-13 22:30:38,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745850789] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:38,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:38,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:30:38,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573112609] [2021-10-13 22:30:38,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:30:38,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:30:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:30:38,147 INFO L87 Difference]: Start difference. First operand 1514 states and 4088 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:38,205 INFO L93 Difference]: Finished difference Result 2203 states and 5812 transitions. [2021-10-13 22:30:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 22:30:38,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:38,212 INFO L225 Difference]: With dead ends: 2203 [2021-10-13 22:30:38,213 INFO L226 Difference]: Without dead ends: 2051 [2021-10-13 22:30:38,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:30:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-10-13 22:30:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1539. [2021-10-13 22:30:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 2.6937581274382314) internal successors, (4143), 1538 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 4143 transitions. [2021-10-13 22:30:38,272 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 4143 transitions. Word has length 42 [2021-10-13 22:30:38,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:38,272 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 4143 transitions. [2021-10-13 22:30:38,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 4143 transitions. [2021-10-13 22:30:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:38,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:38,274 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:38,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 22:30:38,274 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:38,276 INFO L82 PathProgramCache]: Analyzing trace with hash -326136346, now seen corresponding path program 2 times [2021-10-13 22:30:38,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:38,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368813015] [2021-10-13 22:30:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:38,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:38,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:38,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368813015] [2021-10-13 22:30:38,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368813015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:38,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:38,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:30:38,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397183647] [2021-10-13 22:30:38,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:30:38,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:30:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:30:38,372 INFO L87 Difference]: Start difference. First operand 1539 states and 4143 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:38,463 INFO L93 Difference]: Finished difference Result 2523 states and 6708 transitions. [2021-10-13 22:30:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 22:30:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:38,472 INFO L225 Difference]: With dead ends: 2523 [2021-10-13 22:30:38,472 INFO L226 Difference]: Without dead ends: 2256 [2021-10-13 22:30:38,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:30:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2021-10-13 22:30:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 1569. [2021-10-13 22:30:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1568 states have (on average 2.7244897959183674) internal successors, (4272), 1568 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 4272 transitions. [2021-10-13 22:30:38,502 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 4272 transitions. Word has length 42 [2021-10-13 22:30:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:38,502 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 4272 transitions. [2021-10-13 22:30:38,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4272 transitions. [2021-10-13 22:30:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:38,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:38,505 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:38,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 22:30:38,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:38,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:38,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1453256668, now seen corresponding path program 3 times [2021-10-13 22:30:38,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:38,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989804184] [2021-10-13 22:30:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:38,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:38,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:38,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989804184] [2021-10-13 22:30:38,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989804184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:38,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:38,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:30:38,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658132661] [2021-10-13 22:30:38,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:30:38,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:38,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:30:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:30:38,575 INFO L87 Difference]: Start difference. First operand 1569 states and 4272 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:38,676 INFO L93 Difference]: Finished difference Result 2904 states and 7740 transitions. [2021-10-13 22:30:38,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:30:38,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:38,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:38,685 INFO L225 Difference]: With dead ends: 2904 [2021-10-13 22:30:38,685 INFO L226 Difference]: Without dead ends: 2589 [2021-10-13 22:30:38,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:38,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-10-13 22:30:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 1746. [2021-10-13 22:30:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1745 states have (on average 2.7283667621776506) internal successors, (4761), 1745 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 4761 transitions. [2021-10-13 22:30:38,719 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 4761 transitions. Word has length 42 [2021-10-13 22:30:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:38,719 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 4761 transitions. [2021-10-13 22:30:38,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 4761 transitions. [2021-10-13 22:30:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:38,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:38,721 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:38,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 22:30:38,721 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:38,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:38,721 INFO L82 PathProgramCache]: Analyzing trace with hash -564451095, now seen corresponding path program 1 times [2021-10-13 22:30:38,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:38,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978446538] [2021-10-13 22:30:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:38,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:38,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:38,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978446538] [2021-10-13 22:30:38,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978446538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:38,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441230932] [2021-10-13 22:30:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:38,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:38,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:38,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:38,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 22:30:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:38,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:30:38,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:39,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441230932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:39,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:39,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-13 22:30:39,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999305085] [2021-10-13 22:30:39,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:30:39,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:30:39,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:30:39,131 INFO L87 Difference]: Start difference. First operand 1746 states and 4761 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:39,224 INFO L93 Difference]: Finished difference Result 2720 states and 7132 transitions. [2021-10-13 22:30:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 22:30:39,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:39,234 INFO L225 Difference]: With dead ends: 2720 [2021-10-13 22:30:39,234 INFO L226 Difference]: Without dead ends: 2416 [2021-10-13 22:30:39,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-10-13 22:30:39,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1854. [2021-10-13 22:30:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1853 states have (on average 2.6961683756071237) internal successors, (4996), 1853 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 4996 transitions. [2021-10-13 22:30:39,266 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 4996 transitions. Word has length 42 [2021-10-13 22:30:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:39,266 INFO L470 AbstractCegarLoop]: Abstraction has 1854 states and 4996 transitions. [2021-10-13 22:30:39,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 4996 transitions. [2021-10-13 22:30:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:39,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:39,268 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:39,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:39,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:39,488 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:39,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:39,489 INFO L82 PathProgramCache]: Analyzing trace with hash 949487255, now seen corresponding path program 2 times [2021-10-13 22:30:39,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:39,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306547721] [2021-10-13 22:30:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:39,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:39,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:39,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306547721] [2021-10-13 22:30:39,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306547721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:39,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70293908] [2021-10-13 22:30:39,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:30:39,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:39,560 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:39,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 22:30:39,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:39,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:39,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:30:39,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:39,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70293908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:39,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:39,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-13 22:30:39,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462820123] [2021-10-13 22:30:39,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:30:39,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:39,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:30:39,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:30:39,837 INFO L87 Difference]: Start difference. First operand 1854 states and 4996 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:39,904 INFO L93 Difference]: Finished difference Result 2760 states and 7212 transitions. [2021-10-13 22:30:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 22:30:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:39,919 INFO L225 Difference]: With dead ends: 2760 [2021-10-13 22:30:39,919 INFO L226 Difference]: Without dead ends: 2456 [2021-10-13 22:30:39,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:30:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2021-10-13 22:30:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 1899. [2021-10-13 22:30:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1898 states have (on average 2.695468914646997) internal successors, (5116), 1898 states have internal predecessors, (5116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:39,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 5116 transitions. [2021-10-13 22:30:39,964 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 5116 transitions. Word has length 42 [2021-10-13 22:30:39,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:39,964 INFO L470 AbstractCegarLoop]: Abstraction has 1899 states and 5116 transitions. [2021-10-13 22:30:39,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:39,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 5116 transitions. [2021-10-13 22:30:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:39,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:39,966 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:39,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-13 22:30:40,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-13 22:30:40,167 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:40,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:40,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1370336741, now seen corresponding path program 3 times [2021-10-13 22:30:40,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:40,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594415408] [2021-10-13 22:30:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:40,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:40,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:40,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594415408] [2021-10-13 22:30:40,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594415408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:40,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979635195] [2021-10-13 22:30:40,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:30:40,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:40,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:40,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:40,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 22:30:40,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:30:40,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:40,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:30:40,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:40,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979635195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:40,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:40,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-13 22:30:40,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981520457] [2021-10-13 22:30:40,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:30:40,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:30:40,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:30:40,558 INFO L87 Difference]: Start difference. First operand 1899 states and 5116 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:40,699 INFO L93 Difference]: Finished difference Result 3360 states and 8924 transitions. [2021-10-13 22:30:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:30:40,699 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:40,706 INFO L225 Difference]: With dead ends: 3360 [2021-10-13 22:30:40,706 INFO L226 Difference]: Without dead ends: 2826 [2021-10-13 22:30:40,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:30:40,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-10-13 22:30:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2113. [2021-10-13 22:30:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.7130681818181817) internal successors, (5730), 2112 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5730 transitions. [2021-10-13 22:30:40,793 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5730 transitions. Word has length 42 [2021-10-13 22:30:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:40,794 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 5730 transitions. [2021-10-13 22:30:40,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5730 transitions. [2021-10-13 22:30:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:40,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:40,813 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:40,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-13 22:30:41,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:41,029 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:41,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1018888227, now seen corresponding path program 1 times [2021-10-13 22:30:41,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:41,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730285749] [2021-10-13 22:30:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:41,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:41,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:41,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730285749] [2021-10-13 22:30:41,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730285749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:41,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468876293] [2021-10-13 22:30:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:41,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:41,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:41,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:41,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 22:30:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:41,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:41,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:41,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468876293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:41,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:41,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:41,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106545205] [2021-10-13 22:30:41,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:41,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:41,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:41,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:41,536 INFO L87 Difference]: Start difference. First operand 2113 states and 5730 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:41,649 INFO L93 Difference]: Finished difference Result 3333 states and 8707 transitions. [2021-10-13 22:30:41,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:30:41,649 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 22:30:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:41,655 INFO L225 Difference]: With dead ends: 3333 [2021-10-13 22:30:41,655 INFO L226 Difference]: Without dead ends: 2941 [2021-10-13 22:30:41,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:30:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2021-10-13 22:30:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2162. [2021-10-13 22:30:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2161 states have (on average 2.6968995835261453) internal successors, (5828), 2161 states have internal predecessors, (5828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 5828 transitions. [2021-10-13 22:30:41,695 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 5828 transitions. Word has length 47 [2021-10-13 22:30:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:41,696 INFO L470 AbstractCegarLoop]: Abstraction has 2162 states and 5828 transitions. [2021-10-13 22:30:41,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:41,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 5828 transitions. [2021-10-13 22:30:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:41,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:41,699 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:41,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:41,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:41,915 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:41,916 INFO L82 PathProgramCache]: Analyzing trace with hash 831780465, now seen corresponding path program 2 times [2021-10-13 22:30:41,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:41,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516000502] [2021-10-13 22:30:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:41,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:42,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:42,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516000502] [2021-10-13 22:30:42,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516000502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:42,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051379387] [2021-10-13 22:30:42,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:30:42,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:42,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:42,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:42,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 22:30:42,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:42,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:42,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:42,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:42,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051379387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:42,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:42,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:42,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783453645] [2021-10-13 22:30:42,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:42,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:42,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:42,591 INFO L87 Difference]: Start difference. First operand 2162 states and 5828 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:42,729 INFO L93 Difference]: Finished difference Result 3173 states and 8259 transitions. [2021-10-13 22:30:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:30:42,730 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 22:30:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:42,735 INFO L225 Difference]: With dead ends: 3173 [2021-10-13 22:30:42,735 INFO L226 Difference]: Without dead ends: 3021 [2021-10-13 22:30:42,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 142.9ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:30:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-10-13 22:30:42,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2196. [2021-10-13 22:30:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2195 states have (on average 2.687015945330296) internal successors, (5898), 2195 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 5898 transitions. [2021-10-13 22:30:42,769 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 5898 transitions. Word has length 47 [2021-10-13 22:30:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:42,769 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 5898 transitions. [2021-10-13 22:30:42,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 5898 transitions. [2021-10-13 22:30:42,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:42,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:42,772 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:42,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:42,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 22:30:42,990 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:42,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:42,990 INFO L82 PathProgramCache]: Analyzing trace with hash -733078673, now seen corresponding path program 3 times [2021-10-13 22:30:42,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:42,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838398970] [2021-10-13 22:30:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:42,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:43,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:43,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838398970] [2021-10-13 22:30:43,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838398970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:43,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722659997] [2021-10-13 22:30:43,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:30:43,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:43,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:43,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:43,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 22:30:43,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:30:43,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:43,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:43,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:43,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722659997] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:43,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:43,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:43,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213062895] [2021-10-13 22:30:43,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:43,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:43,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:43,518 INFO L87 Difference]: Start difference. First operand 2196 states and 5898 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:43,675 INFO L93 Difference]: Finished difference Result 3597 states and 9235 transitions. [2021-10-13 22:30:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:30:43,675 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 22:30:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:43,681 INFO L225 Difference]: With dead ends: 3597 [2021-10-13 22:30:43,681 INFO L226 Difference]: Without dead ends: 3205 [2021-10-13 22:30:43,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 141.8ms TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:30:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3205 states. [2021-10-13 22:30:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3205 to 2196. [2021-10-13 22:30:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2195 states have (on average 2.687015945330296) internal successors, (5898), 2195 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 5898 transitions. [2021-10-13 22:30:43,712 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 5898 transitions. Word has length 47 [2021-10-13 22:30:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:43,712 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 5898 transitions. [2021-10-13 22:30:43,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 5898 transitions. [2021-10-13 22:30:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:43,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:43,715 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:43,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:43,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:43,930 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:43,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1704846823, now seen corresponding path program 4 times [2021-10-13 22:30:43,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:43,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145622122] [2021-10-13 22:30:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:43,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:44,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:44,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145622122] [2021-10-13 22:30:44,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145622122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:44,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192275330] [2021-10-13 22:30:44,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:30:44,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:44,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:44,027 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:44,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 22:30:44,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:30:44,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:44,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:44,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:44,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192275330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:44,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:44,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:44,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929662908] [2021-10-13 22:30:44,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:44,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:44,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:44,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:44,571 INFO L87 Difference]: Start difference. First operand 2196 states and 5898 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:44,827 INFO L93 Difference]: Finished difference Result 4391 states and 11500 transitions. [2021-10-13 22:30:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:30:44,827 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 22:30:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:44,834 INFO L225 Difference]: With dead ends: 4391 [2021-10-13 22:30:44,835 INFO L226 Difference]: Without dead ends: 3833 [2021-10-13 22:30:44,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 188.6ms TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:30:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2021-10-13 22:30:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 2235. [2021-10-13 22:30:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2234 states have (on average 2.6965085049239033) internal successors, (6024), 2234 states have internal predecessors, (6024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 6024 transitions. [2021-10-13 22:30:44,931 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 6024 transitions. Word has length 47 [2021-10-13 22:30:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:44,931 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 6024 transitions. [2021-10-13 22:30:44,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:44,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 6024 transitions. [2021-10-13 22:30:44,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:44,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:44,934 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:44,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-13 22:30:45,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:45,166 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:45,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1024011455, now seen corresponding path program 5 times [2021-10-13 22:30:45,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:45,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141086823] [2021-10-13 22:30:45,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:45,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:45,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:45,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141086823] [2021-10-13 22:30:45,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141086823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:45,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379592543] [2021-10-13 22:30:45,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:30:45,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:45,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:45,279 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:45,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 22:30:45,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:45,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:45,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:45,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:45,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379592543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:45,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:45,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:45,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250691484] [2021-10-13 22:30:45,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:45,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:45,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:45,785 INFO L87 Difference]: Start difference. First operand 2235 states and 6024 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:46,005 INFO L93 Difference]: Finished difference Result 4350 states and 11284 transitions. [2021-10-13 22:30:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:30:46,005 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 22:30:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:46,012 INFO L225 Difference]: With dead ends: 4350 [2021-10-13 22:30:46,012 INFO L226 Difference]: Without dead ends: 3958 [2021-10-13 22:30:46,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 190.5ms TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:30:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2021-10-13 22:30:46,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 2423. [2021-10-13 22:30:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 2.7345169281585466) internal successors, (6623), 2422 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 6623 transitions. [2021-10-13 22:30:46,053 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 6623 transitions. Word has length 47 [2021-10-13 22:30:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:46,053 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 6623 transitions. [2021-10-13 22:30:46,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 6623 transitions. [2021-10-13 22:30:46,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:46,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:46,056 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:46,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:46,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 22:30:46,274 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:46,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:46,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1295812541, now seen corresponding path program 6 times [2021-10-13 22:30:46,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:46,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224362497] [2021-10-13 22:30:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:46,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:46,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:46,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224362497] [2021-10-13 22:30:46,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224362497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:46,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437708866] [2021-10-13 22:30:46,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:30:46,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:46,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:46,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:46,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 22:30:46,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 22:30:46,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:46,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:46,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:46,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437708866] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:46,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:46,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:46,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166624476] [2021-10-13 22:30:46,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:46,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:46,895 INFO L87 Difference]: Start difference. First operand 2423 states and 6623 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:47,340 INFO L93 Difference]: Finished difference Result 5771 states and 15228 transitions. [2021-10-13 22:30:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:30:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 22:30:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:47,347 INFO L225 Difference]: With dead ends: 5771 [2021-10-13 22:30:47,348 INFO L226 Difference]: Without dead ends: 4898 [2021-10-13 22:30:47,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 371.5ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:30:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-10-13 22:30:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2817. [2021-10-13 22:30:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2816 states have (on average 2.7169744318181817) internal successors, (7651), 2816 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-10-13 22:30:47,394 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-10-13 22:30:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:47,395 INFO L470 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-10-13 22:30:47,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-10-13 22:30:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:47,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:47,398 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:47,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:47,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 22:30:47,612 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:47,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2036101166, now seen corresponding path program 7 times [2021-10-13 22:30:47,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:47,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980551617] [2021-10-13 22:30:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:47,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:47,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:47,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980551617] [2021-10-13 22:30:47,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980551617] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:47,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864689868] [2021-10-13 22:30:47,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:30:47,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:47,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:47,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 22:30:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:47,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:47,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:48,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864689868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:48,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:48,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-13 22:30:48,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454460755] [2021-10-13 22:30:48,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:30:48,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:30:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:30:48,374 INFO L87 Difference]: Start difference. First operand 2817 states and 7651 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:48,600 INFO L93 Difference]: Finished difference Result 4391 states and 11330 transitions. [2021-10-13 22:30:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:30:48,600 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:48,607 INFO L225 Difference]: With dead ends: 4391 [2021-10-13 22:30:48,607 INFO L226 Difference]: Without dead ends: 3999 [2021-10-13 22:30:48,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 210.0ms TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:30:48,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2021-10-13 22:30:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 2932. [2021-10-13 22:30:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2931 states have (on average 2.6939611054247696) internal successors, (7896), 2931 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 7896 transitions. [2021-10-13 22:30:48,665 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 7896 transitions. Word has length 52 [2021-10-13 22:30:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:48,665 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 7896 transitions. [2021-10-13 22:30:48,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 7896 transitions. [2021-10-13 22:30:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:48,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:48,669 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:48,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-10-13 22:30:48,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 22:30:48,886 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:48,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash 397732806, now seen corresponding path program 1 times [2021-10-13 22:30:48,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:48,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702730936] [2021-10-13 22:30:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:48,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:48,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:48,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702730936] [2021-10-13 22:30:48,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702730936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:48,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928057490] [2021-10-13 22:30:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:48,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:48,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:48,996 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:48,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 22:30:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:49,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:49,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:49,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928057490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:49,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:49,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:49,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659789623] [2021-10-13 22:30:49,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:49,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:49,673 INFO L87 Difference]: Start difference. First operand 2932 states and 7896 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:49,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:49,848 INFO L93 Difference]: Finished difference Result 4087 states and 10594 transitions. [2021-10-13 22:30:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:30:49,849 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:49,853 INFO L225 Difference]: With dead ends: 4087 [2021-10-13 22:30:49,853 INFO L226 Difference]: Without dead ends: 3935 [2021-10-13 22:30:49,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 170.8ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:30:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-10-13 22:30:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2982. [2021-10-13 22:30:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2981 states have (on average 2.6856759476685674) internal successors, (8006), 2981 states have internal predecessors, (8006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 8006 transitions. [2021-10-13 22:30:49,893 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 8006 transitions. Word has length 52 [2021-10-13 22:30:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:49,894 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 8006 transitions. [2021-10-13 22:30:49,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 8006 transitions. [2021-10-13 22:30:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:49,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:49,899 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:49,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:50,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 22:30:50,116 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:50,116 INFO L82 PathProgramCache]: Analyzing trace with hash 871061024, now seen corresponding path program 2 times [2021-10-13 22:30:50,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:50,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616188205] [2021-10-13 22:30:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:50,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:50,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:50,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616188205] [2021-10-13 22:30:50,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616188205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:50,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343454271] [2021-10-13 22:30:50,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:30:50,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:50,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:50,198 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:50,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 22:30:50,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:50,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:50,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:50,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:50,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343454271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:50,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:50,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:50,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443080335] [2021-10-13 22:30:50,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:50,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:50,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:50,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:50,911 INFO L87 Difference]: Start difference. First operand 2982 states and 8006 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:51,065 INFO L93 Difference]: Finished difference Result 3927 states and 10274 transitions. [2021-10-13 22:30:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:30:51,065 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:51,070 INFO L225 Difference]: With dead ends: 3927 [2021-10-13 22:30:51,070 INFO L226 Difference]: Without dead ends: 3775 [2021-10-13 22:30:51,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:30:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-10-13 22:30:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 2981. [2021-10-13 22:30:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2980 states have (on average 2.684228187919463) internal successors, (7999), 2980 states have internal predecessors, (7999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 7999 transitions. [2021-10-13 22:30:51,135 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 7999 transitions. Word has length 52 [2021-10-13 22:30:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:51,135 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 7999 transitions. [2021-10-13 22:30:51,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 7999 transitions. [2021-10-13 22:30:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:51,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:51,138 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:51,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:51,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:51,352 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:51,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:51,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1086922880, now seen corresponding path program 8 times [2021-10-13 22:30:51,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:51,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873497908] [2021-10-13 22:30:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:51,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:51,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:51,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873497908] [2021-10-13 22:30:51,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873497908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:51,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256238924] [2021-10-13 22:30:51,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:30:51,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:51,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:51,447 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:51,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 22:30:51,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:51,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:51,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:51,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:52,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256238924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:52,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:52,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-13 22:30:52,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243112327] [2021-10-13 22:30:52,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:30:52,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:52,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:30:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:30:52,245 INFO L87 Difference]: Start difference. First operand 2981 states and 7999 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:52,482 INFO L93 Difference]: Finished difference Result 4796 states and 12155 transitions. [2021-10-13 22:30:52,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:30:52,483 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:52,489 INFO L225 Difference]: With dead ends: 4796 [2021-10-13 22:30:52,489 INFO L226 Difference]: Without dead ends: 4404 [2021-10-13 22:30:52,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 253.4ms TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:30:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2021-10-13 22:30:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 2956. [2021-10-13 22:30:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2955 states have (on average 2.688324873096447) internal successors, (7944), 2955 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 7944 transitions. [2021-10-13 22:30:52,534 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 7944 transitions. Word has length 52 [2021-10-13 22:30:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:52,534 INFO L470 AbstractCegarLoop]: Abstraction has 2956 states and 7944 transitions. [2021-10-13 22:30:52,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 7944 transitions. [2021-10-13 22:30:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:52,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:52,537 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:52,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:52,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-13 22:30:52,751 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:52,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1611315092, now seen corresponding path program 9 times [2021-10-13 22:30:52,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:52,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413198771] [2021-10-13 22:30:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:52,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:52,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:52,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413198771] [2021-10-13 22:30:52,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413198771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:52,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452559254] [2021-10-13 22:30:52,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:30:52,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:52,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:52,864 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:52,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 22:30:53,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:30:53,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:53,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:53,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:53,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452559254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:53,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:53,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-13 22:30:53,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718688131] [2021-10-13 22:30:53,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:30:53,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:30:53,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:30:53,658 INFO L87 Difference]: Start difference. First operand 2956 states and 7944 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:54,039 INFO L93 Difference]: Finished difference Result 5543 states and 14338 transitions. [2021-10-13 22:30:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:30:54,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:54,047 INFO L225 Difference]: With dead ends: 5543 [2021-10-13 22:30:54,047 INFO L226 Difference]: Without dead ends: 5063 [2021-10-13 22:30:54,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 312.5ms TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:30:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5063 states. [2021-10-13 22:30:54,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5063 to 3250. [2021-10-13 22:30:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 3249 states have (on average 2.7331486611265006) internal successors, (8880), 3249 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 8880 transitions. [2021-10-13 22:30:54,119 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 8880 transitions. Word has length 52 [2021-10-13 22:30:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:54,119 INFO L470 AbstractCegarLoop]: Abstraction has 3250 states and 8880 transitions. [2021-10-13 22:30:54,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 8880 transitions. [2021-10-13 22:30:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:54,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:54,123 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:54,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-13 22:30:54,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:54,339 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash 363828208, now seen corresponding path program 10 times [2021-10-13 22:30:54,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:54,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467347827] [2021-10-13 22:30:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:54,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:54,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:54,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467347827] [2021-10-13 22:30:54,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467347827] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:54,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278431334] [2021-10-13 22:30:54,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:30:54,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:54,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:54,447 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:54,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 22:30:54,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:30:54,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:54,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:54,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:55,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278431334] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:55,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:55,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-13 22:30:55,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448644248] [2021-10-13 22:30:55,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:30:55,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:55,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:30:55,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:30:55,140 INFO L87 Difference]: Start difference. First operand 3250 states and 8880 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:55,666 INFO L93 Difference]: Finished difference Result 6631 states and 17538 transitions. [2021-10-13 22:30:55,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:30:55,666 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:55,674 INFO L225 Difference]: With dead ends: 6631 [2021-10-13 22:30:55,674 INFO L226 Difference]: Without dead ends: 5691 [2021-10-13 22:30:55,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 446.7ms TimeCoverageRelationStatistics Valid=536, Invalid=1914, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:30:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5691 states. [2021-10-13 22:30:55,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5691 to 3302. [2021-10-13 22:30:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 3301 states have (on average 2.7197818842774915) internal successors, (8978), 3301 states have internal predecessors, (8978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 8978 transitions. [2021-10-13 22:30:55,774 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 8978 transitions. Word has length 52 [2021-10-13 22:30:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:55,774 INFO L470 AbstractCegarLoop]: Abstraction has 3302 states and 8978 transitions. [2021-10-13 22:30:55,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 8978 transitions. [2021-10-13 22:30:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:55,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:55,778 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:55,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:55,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:55,995 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash 823094008, now seen corresponding path program 3 times [2021-10-13 22:30:55,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:55,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556819544] [2021-10-13 22:30:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:55,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:56,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:56,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556819544] [2021-10-13 22:30:56,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556819544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:56,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439051976] [2021-10-13 22:30:56,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:30:56,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:56,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:56,085 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:56,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 22:30:56,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:30:56,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:56,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:56,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:56,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439051976] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:56,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:56,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:56,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094606353] [2021-10-13 22:30:56,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:56,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:56,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:56,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:56,879 INFO L87 Difference]: Start difference. First operand 3302 states and 8978 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:57,158 INFO L93 Difference]: Finished difference Result 5678 states and 15064 transitions. [2021-10-13 22:30:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:30:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:57,165 INFO L225 Difference]: With dead ends: 5678 [2021-10-13 22:30:57,165 INFO L226 Difference]: Without dead ends: 5526 [2021-10-13 22:30:57,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 243.7ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:30:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2021-10-13 22:30:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 3560. [2021-10-13 22:30:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 2.766226468109019) internal successors, (9845), 3559 states have internal predecessors, (9845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 9845 transitions. [2021-10-13 22:30:57,250 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 9845 transitions. Word has length 52 [2021-10-13 22:30:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:57,251 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 9845 transitions. [2021-10-13 22:30:57,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 9845 transitions. [2021-10-13 22:30:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:57,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:57,255 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:57,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:57,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-13 22:30:57,471 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:57,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1496729988, now seen corresponding path program 4 times [2021-10-13 22:30:57,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:57,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107895749] [2021-10-13 22:30:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:57,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:57,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:57,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107895749] [2021-10-13 22:30:57,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107895749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:57,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531916513] [2021-10-13 22:30:57,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:30:57,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:57,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:57,586 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:57,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 22:30:58,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:30:58,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:58,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:58,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:58,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531916513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:58,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:58,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:58,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60257537] [2021-10-13 22:30:58,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:58,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:58,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:58,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:58,453 INFO L87 Difference]: Start difference. First operand 3560 states and 9845 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:58,930 INFO L93 Difference]: Finished difference Result 6909 states and 18691 transitions. [2021-10-13 22:30:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:30:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:58,939 INFO L225 Difference]: With dead ends: 6909 [2021-10-13 22:30:58,939 INFO L226 Difference]: Without dead ends: 6479 [2021-10-13 22:30:58,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 434.4ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:30:58,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2021-10-13 22:30:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 3764. [2021-10-13 22:30:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 2.766941270263088) internal successors, (10412), 3763 states have internal predecessors, (10412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 10412 transitions. [2021-10-13 22:30:58,993 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 10412 transitions. Word has length 52 [2021-10-13 22:30:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:58,993 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 10412 transitions. [2021-10-13 22:30:58,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 10412 transitions. [2021-10-13 22:30:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:30:58,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:58,997 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:59,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:59,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:59,214 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:59,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:59,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1336063101, now seen corresponding path program 11 times [2021-10-13 22:30:59,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:59,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253079098] [2021-10-13 22:30:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:59,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:59,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:59,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253079098] [2021-10-13 22:30:59,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253079098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:59,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343529801] [2021-10-13 22:30:59,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:30:59,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:59,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:59,347 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:30:59,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 22:30:59,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:30:59,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:59,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:30:59,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:00,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343529801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:00,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:00,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:00,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034221693] [2021-10-13 22:31:00,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:00,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:00,296 INFO L87 Difference]: Start difference. First operand 3764 states and 10412 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:00,457 INFO L93 Difference]: Finished difference Result 5044 states and 13383 transitions. [2021-10-13 22:31:00,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 22:31:00,458 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:00,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:00,464 INFO L225 Difference]: With dead ends: 5044 [2021-10-13 22:31:00,464 INFO L226 Difference]: Without dead ends: 4892 [2021-10-13 22:31:00,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 172.7ms TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:31:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2021-10-13 22:31:00,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 3839. [2021-10-13 22:31:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3838 states have (on average 2.755862428348098) internal successors, (10577), 3838 states have internal predecessors, (10577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 10577 transitions. [2021-10-13 22:31:00,515 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 10577 transitions. Word has length 57 [2021-10-13 22:31:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:00,515 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 10577 transitions. [2021-10-13 22:31:00,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 10577 transitions. [2021-10-13 22:31:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:00,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:00,520 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:00,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:00,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:00,751 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:00,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1108235503, now seen corresponding path program 12 times [2021-10-13 22:31:00,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:00,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960814008] [2021-10-13 22:31:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:00,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:00,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:00,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960814008] [2021-10-13 22:31:00,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960814008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:00,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228007789] [2021-10-13 22:31:00,872 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:00,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:00,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:00,888 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:00,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 22:31:01,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:31:01,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:01,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:01,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:01,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228007789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:01,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:01,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:01,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364107046] [2021-10-13 22:31:01,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:01,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:01,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:01,874 INFO L87 Difference]: Start difference. First operand 3839 states and 10577 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:02,058 INFO L93 Difference]: Finished difference Result 5180 states and 13655 transitions. [2021-10-13 22:31:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:31:02,064 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:02,071 INFO L225 Difference]: With dead ends: 5180 [2021-10-13 22:31:02,071 INFO L226 Difference]: Without dead ends: 5028 [2021-10-13 22:31:02,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 184.6ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:31:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-10-13 22:31:02,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 3839. [2021-10-13 22:31:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3838 states have (on average 2.755862428348098) internal successors, (10577), 3838 states have internal predecessors, (10577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 10577 transitions. [2021-10-13 22:31:02,129 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 10577 transitions. Word has length 57 [2021-10-13 22:31:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:02,129 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 10577 transitions. [2021-10-13 22:31:02,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 10577 transitions. [2021-10-13 22:31:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:02,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:02,134 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:02,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:02,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:02,352 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:02,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1325598469, now seen corresponding path program 5 times [2021-10-13 22:31:02,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:02,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603744804] [2021-10-13 22:31:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:02,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:02,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:02,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603744804] [2021-10-13 22:31:02,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603744804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:02,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455305983] [2021-10-13 22:31:02,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:02,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:02,448 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:02,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 22:31:03,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:31:03,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:03,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:03,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:03,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455305983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:03,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:03,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:03,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120685194] [2021-10-13 22:31:03,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:03,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:03,469 INFO L87 Difference]: Start difference. First operand 3839 states and 10577 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:03,706 INFO L93 Difference]: Finished difference Result 5324 states and 13943 transitions. [2021-10-13 22:31:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:31:03,706 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:03,714 INFO L225 Difference]: With dead ends: 5324 [2021-10-13 22:31:03,714 INFO L226 Difference]: Without dead ends: 5172 [2021-10-13 22:31:03,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 240.8ms TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:31:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5172 states. [2021-10-13 22:31:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5172 to 3904. [2021-10-13 22:31:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3903 states have (on average 2.74583653599795) internal successors, (10717), 3903 states have internal predecessors, (10717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 10717 transitions. [2021-10-13 22:31:03,770 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 10717 transitions. Word has length 57 [2021-10-13 22:31:03,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:03,770 INFO L470 AbstractCegarLoop]: Abstraction has 3904 states and 10717 transitions. [2021-10-13 22:31:03,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:03,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 10717 transitions. [2021-10-13 22:31:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:03,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:03,775 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:03,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:03,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 22:31:03,992 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:03,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1798926687, now seen corresponding path program 6 times [2021-10-13 22:31:03,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:03,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626275435] [2021-10-13 22:31:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:03,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:04,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:04,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626275435] [2021-10-13 22:31:04,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626275435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:04,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720265430] [2021-10-13 22:31:04,101 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:04,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:04,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:04,101 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:04,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 22:31:04,800 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:31:04,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:04,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:04,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:05,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720265430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:05,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:05,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:05,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155619219] [2021-10-13 22:31:05,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:05,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:05,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:05,240 INFO L87 Difference]: Start difference. First operand 3904 states and 10717 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:05,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:05,450 INFO L93 Difference]: Finished difference Result 5195 states and 13680 transitions. [2021-10-13 22:31:05,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:31:05,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:05,457 INFO L225 Difference]: With dead ends: 5195 [2021-10-13 22:31:05,457 INFO L226 Difference]: Without dead ends: 5043 [2021-10-13 22:31:05,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 226.2ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:31:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2021-10-13 22:31:05,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 3869. [2021-10-13 22:31:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 3868 states have (on average 2.750775594622544) internal successors, (10640), 3868 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 10640 transitions. [2021-10-13 22:31:05,548 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 10640 transitions. Word has length 57 [2021-10-13 22:31:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:05,548 INFO L470 AbstractCegarLoop]: Abstraction has 3869 states and 10640 transitions. [2021-10-13 22:31:05,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 10640 transitions. [2021-10-13 22:31:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:05,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:05,554 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:05,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:05,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 22:31:05,769 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:05,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1443822703, now seen corresponding path program 7 times [2021-10-13 22:31:05,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:05,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657722913] [2021-10-13 22:31:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:05,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:05,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:05,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657722913] [2021-10-13 22:31:05,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657722913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:05,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501401492] [2021-10-13 22:31:05,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:05,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:05,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:05,895 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:05,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 22:31:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:06,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:06,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:07,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501401492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:07,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:07,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:07,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96798606] [2021-10-13 22:31:07,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:07,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:07,030 INFO L87 Difference]: Start difference. First operand 3869 states and 10640 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:07,250 INFO L93 Difference]: Finished difference Result 5377 states and 14042 transitions. [2021-10-13 22:31:07,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:31:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:07,258 INFO L225 Difference]: With dead ends: 5377 [2021-10-13 22:31:07,258 INFO L226 Difference]: Without dead ends: 5225 [2021-10-13 22:31:07,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 245.7ms TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:31:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2021-10-13 22:31:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 3974. [2021-10-13 22:31:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3973 states have (on average 2.7362194815001257) internal successors, (10871), 3973 states have internal predecessors, (10871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 10871 transitions. [2021-10-13 22:31:07,315 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 10871 transitions. Word has length 57 [2021-10-13 22:31:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:07,315 INFO L470 AbstractCegarLoop]: Abstraction has 3974 states and 10871 transitions. [2021-10-13 22:31:07,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 10871 transitions. [2021-10-13 22:31:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:07,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:07,320 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:07,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-13 22:31:07,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 22:31:07,521 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:07,522 INFO L82 PathProgramCache]: Analyzing trace with hash 805809545, now seen corresponding path program 8 times [2021-10-13 22:31:07,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:07,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769322940] [2021-10-13 22:31:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:07,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:07,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:07,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769322940] [2021-10-13 22:31:07,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769322940] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:07,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655005028] [2021-10-13 22:31:07,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:07,629 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:07,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:07,630 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:07,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 22:31:08,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:08,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:08,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:08,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:08,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655005028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:08,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:08,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:08,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324591196] [2021-10-13 22:31:08,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:08,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:08,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:08,793 INFO L87 Difference]: Start difference. First operand 3974 states and 10871 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:09,039 INFO L93 Difference]: Finished difference Result 5481 states and 14250 transitions. [2021-10-13 22:31:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:31:09,039 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:09,046 INFO L225 Difference]: With dead ends: 5481 [2021-10-13 22:31:09,046 INFO L226 Difference]: Without dead ends: 5329 [2021-10-13 22:31:09,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 261.4ms TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:31:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2021-10-13 22:31:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 3943. [2021-10-13 22:31:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 3942 states have (on average 2.73921867072552) internal successors, (10798), 3942 states have internal predecessors, (10798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 10798 transitions. [2021-10-13 22:31:09,111 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 10798 transitions. Word has length 57 [2021-10-13 22:31:09,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:09,112 INFO L470 AbstractCegarLoop]: Abstraction has 3943 states and 10798 transitions. [2021-10-13 22:31:09,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 10798 transitions. [2021-10-13 22:31:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:09,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:09,117 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:09,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:09,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:09,331 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:09,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1819523197, now seen corresponding path program 9 times [2021-10-13 22:31:09,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:09,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242324455] [2021-10-13 22:31:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:09,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:09,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:09,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242324455] [2021-10-13 22:31:09,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242324455] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:09,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752737476] [2021-10-13 22:31:09,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:09,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:09,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:09,426 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:09,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 22:31:10,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:31:10,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:10,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:10,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:10,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752737476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:10,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:10,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:10,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115356927] [2021-10-13 22:31:10,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:10,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:10,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:10,762 INFO L87 Difference]: Start difference. First operand 3943 states and 10798 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:11,049 INFO L93 Difference]: Finished difference Result 5465 states and 14218 transitions. [2021-10-13 22:31:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:31:11,050 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:11,057 INFO L225 Difference]: With dead ends: 5465 [2021-10-13 22:31:11,057 INFO L226 Difference]: Without dead ends: 5313 [2021-10-13 22:31:11,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 291.6ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:31:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2021-10-13 22:31:11,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 3903. [2021-10-13 22:31:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3902 states have (on average 2.744746283956945) internal successors, (10710), 3902 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 10710 transitions. [2021-10-13 22:31:11,163 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 10710 transitions. Word has length 57 [2021-10-13 22:31:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:11,163 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 10710 transitions. [2021-10-13 22:31:11,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 10710 transitions. [2021-10-13 22:31:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:11,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:11,168 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:11,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:11,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:11,386 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:11,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1924399503, now seen corresponding path program 13 times [2021-10-13 22:31:11,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:11,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862072547] [2021-10-13 22:31:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:11,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:11,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:11,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862072547] [2021-10-13 22:31:11,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862072547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:11,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717359666] [2021-10-13 22:31:11,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:11,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:11,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:11,530 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:11,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 22:31:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:12,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:12,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:12,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717359666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:12,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:12,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:12,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443774884] [2021-10-13 22:31:12,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:12,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:12,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:12,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:12,763 INFO L87 Difference]: Start difference. First operand 3903 states and 10710 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:12,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:12,906 INFO L93 Difference]: Finished difference Result 5284 states and 13871 transitions. [2021-10-13 22:31:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:31:12,906 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:12,913 INFO L225 Difference]: With dead ends: 5284 [2021-10-13 22:31:12,914 INFO L226 Difference]: Without dead ends: 5132 [2021-10-13 22:31:12,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 181.5ms TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:31:12,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2021-10-13 22:31:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 3953. [2021-10-13 22:31:12,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7378542510121457) internal successors, (10820), 3952 states have internal predecessors, (10820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10820 transitions. [2021-10-13 22:31:12,989 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10820 transitions. Word has length 57 [2021-10-13 22:31:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:12,989 INFO L470 AbstractCegarLoop]: Abstraction has 3953 states and 10820 transitions. [2021-10-13 22:31:12,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10820 transitions. [2021-10-13 22:31:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:12,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:12,994 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:13,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:13,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 22:31:13,228 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:13,228 INFO L82 PathProgramCache]: Analyzing trace with hash -519899101, now seen corresponding path program 14 times [2021-10-13 22:31:13,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:13,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659988567] [2021-10-13 22:31:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:13,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:13,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:13,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659988567] [2021-10-13 22:31:13,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659988567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:13,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383344088] [2021-10-13 22:31:13,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:13,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:13,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:13,326 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:13,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 22:31:14,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:14,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:14,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:14,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:14,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383344088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:14,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:14,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:14,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234239636] [2021-10-13 22:31:14,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:14,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:14,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:14,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:14,585 INFO L87 Difference]: Start difference. First operand 3953 states and 10820 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:14,774 INFO L93 Difference]: Finished difference Result 5525 states and 14358 transitions. [2021-10-13 22:31:14,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:31:14,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:14,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:14,781 INFO L225 Difference]: With dead ends: 5525 [2021-10-13 22:31:14,781 INFO L226 Difference]: Without dead ends: 5373 [2021-10-13 22:31:14,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 187.4ms TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:31:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2021-10-13 22:31:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 3953. [2021-10-13 22:31:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7378542510121457) internal successors, (10820), 3952 states have internal predecessors, (10820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10820 transitions. [2021-10-13 22:31:14,825 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10820 transitions. Word has length 57 [2021-10-13 22:31:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:14,825 INFO L470 AbstractCegarLoop]: Abstraction has 3953 states and 10820 transitions. [2021-10-13 22:31:14,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10820 transitions. [2021-10-13 22:31:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:14,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:14,830 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:14,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:15,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-13 22:31:15,035 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1913934871, now seen corresponding path program 10 times [2021-10-13 22:31:15,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:15,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721705290] [2021-10-13 22:31:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:15,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:15,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:15,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721705290] [2021-10-13 22:31:15,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721705290] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:15,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294851641] [2021-10-13 22:31:15,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:15,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:15,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:15,168 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:15,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 22:31:16,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:16,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:16,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:16,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:16,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294851641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:16,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:16,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:16,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637105280] [2021-10-13 22:31:16,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:16,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:16,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:16,460 INFO L87 Difference]: Start difference. First operand 3953 states and 10820 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:16,670 INFO L93 Difference]: Finished difference Result 5660 states and 14623 transitions. [2021-10-13 22:31:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:31:16,671 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:16,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:16,679 INFO L225 Difference]: With dead ends: 5660 [2021-10-13 22:31:16,679 INFO L226 Difference]: Without dead ends: 5508 [2021-10-13 22:31:16,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 271.0ms TimeCoverageRelationStatistics Valid=279, Invalid=777, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:31:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-10-13 22:31:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3953. [2021-10-13 22:31:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7378542510121457) internal successors, (10820), 3952 states have internal predecessors, (10820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10820 transitions. [2021-10-13 22:31:16,728 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10820 transitions. Word has length 57 [2021-10-13 22:31:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:16,728 INFO L470 AbstractCegarLoop]: Abstraction has 3953 states and 10820 transitions. [2021-10-13 22:31:16,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10820 transitions. [2021-10-13 22:31:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:16,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:16,746 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:16,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:16,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:16,964 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:16,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1907704207, now seen corresponding path program 11 times [2021-10-13 22:31:16,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:16,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153487551] [2021-10-13 22:31:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:16,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:17,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:17,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153487551] [2021-10-13 22:31:17,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153487551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:17,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277439738] [2021-10-13 22:31:17,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:17,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:17,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:17,044 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:17,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 22:31:18,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:31:18,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:18,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:18,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:18,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277439738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:18,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:18,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:18,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773268862] [2021-10-13 22:31:18,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:18,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:18,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:18,300 INFO L87 Difference]: Start difference. First operand 3953 states and 10820 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:18,504 INFO L93 Difference]: Finished difference Result 5465 states and 14218 transitions. [2021-10-13 22:31:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:31:18,505 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:18,511 INFO L225 Difference]: With dead ends: 5465 [2021-10-13 22:31:18,512 INFO L226 Difference]: Without dead ends: 5313 [2021-10-13 22:31:18,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 217.2ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:31:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2021-10-13 22:31:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 3878. [2021-10-13 22:31:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.7482589631158114) internal successors, (10655), 3877 states have internal predecessors, (10655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10655 transitions. [2021-10-13 22:31:18,557 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10655 transitions. Word has length 57 [2021-10-13 22:31:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:18,558 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10655 transitions. [2021-10-13 22:31:18,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10655 transitions. [2021-10-13 22:31:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:18,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:18,561 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:18,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:18,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:18,779 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:18,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash 462098783, now seen corresponding path program 15 times [2021-10-13 22:31:18,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:18,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041213635] [2021-10-13 22:31:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:18,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:18,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:18,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041213635] [2021-10-13 22:31:18,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041213635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:18,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856678716] [2021-10-13 22:31:18,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:18,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:18,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:18,866 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:18,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 22:31:19,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:31:19,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:19,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:19,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:20,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856678716] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:20,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:20,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:20,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709481503] [2021-10-13 22:31:20,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:20,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:20,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:20,175 INFO L87 Difference]: Start difference. First operand 3878 states and 10655 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:20,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:20,286 INFO L93 Difference]: Finished difference Result 5289 states and 13896 transitions. [2021-10-13 22:31:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:31:20,286 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:20,293 INFO L225 Difference]: With dead ends: 5289 [2021-10-13 22:31:20,293 INFO L226 Difference]: Without dead ends: 5137 [2021-10-13 22:31:20,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:31:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5137 states. [2021-10-13 22:31:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5137 to 3903. [2021-10-13 22:31:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3902 states have (on average 2.744746283956945) internal successors, (10710), 3902 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 10710 transitions. [2021-10-13 22:31:20,338 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 10710 transitions. Word has length 57 [2021-10-13 22:31:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:20,338 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 10710 transitions. [2021-10-13 22:31:20,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 10710 transitions. [2021-10-13 22:31:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:20,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:20,342 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:20,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:20,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:20,551 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:20,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1982199821, now seen corresponding path program 16 times [2021-10-13 22:31:20,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:20,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449425214] [2021-10-13 22:31:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:20,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:20,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:20,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449425214] [2021-10-13 22:31:20,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449425214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:20,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550107919] [2021-10-13 22:31:20,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:20,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:20,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:20,653 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:20,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 22:31:21,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:21,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:21,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:21,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:21,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550107919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:21,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:21,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:21,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137891212] [2021-10-13 22:31:21,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:21,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:21,996 INFO L87 Difference]: Start difference. First operand 3903 states and 10710 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:22,196 INFO L93 Difference]: Finished difference Result 5505 states and 14328 transitions. [2021-10-13 22:31:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:31:22,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:22,203 INFO L225 Difference]: With dead ends: 5505 [2021-10-13 22:31:22,203 INFO L226 Difference]: Without dead ends: 5353 [2021-10-13 22:31:22,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 199.5ms TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:31:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2021-10-13 22:31:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3903. [2021-10-13 22:31:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3902 states have (on average 2.744746283956945) internal successors, (10710), 3902 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 10710 transitions. [2021-10-13 22:31:22,284 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 10710 transitions. Word has length 57 [2021-10-13 22:31:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:22,285 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 10710 transitions. [2021-10-13 22:31:22,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 10710 transitions. [2021-10-13 22:31:22,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:22,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:22,288 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:22,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:22,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 22:31:22,509 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:22,510 INFO L82 PathProgramCache]: Analyzing trace with hash 31285135, now seen corresponding path program 17 times [2021-10-13 22:31:22,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:22,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570414544] [2021-10-13 22:31:22,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:22,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:22,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:22,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570414544] [2021-10-13 22:31:22,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570414544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:22,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320826509] [2021-10-13 22:31:22,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:22,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:22,611 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:22,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 22:31:23,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:31:23,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:23,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:23,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:24,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320826509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:24,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:24,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:24,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29103433] [2021-10-13 22:31:24,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:24,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:24,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:24,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:24,034 INFO L87 Difference]: Start difference. First operand 3903 states and 10710 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:24,211 INFO L93 Difference]: Finished difference Result 5274 states and 13871 transitions. [2021-10-13 22:31:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:31:24,215 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:24,221 INFO L225 Difference]: With dead ends: 5274 [2021-10-13 22:31:24,221 INFO L226 Difference]: Without dead ends: 5122 [2021-10-13 22:31:24,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:31:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5122 states. [2021-10-13 22:31:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5122 to 3878. [2021-10-13 22:31:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.7482589631158114) internal successors, (10655), 3877 states have internal predecessors, (10655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10655 transitions. [2021-10-13 22:31:24,280 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10655 transitions. Word has length 57 [2021-10-13 22:31:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:24,280 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10655 transitions. [2021-10-13 22:31:24,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10655 transitions. [2021-10-13 22:31:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:24,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:24,284 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:24,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-13 22:31:24,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 22:31:24,487 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:24,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:24,488 INFO L82 PathProgramCache]: Analyzing trace with hash -2067603337, now seen corresponding path program 18 times [2021-10-13 22:31:24,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:24,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444954512] [2021-10-13 22:31:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:24,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:24,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:24,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444954512] [2021-10-13 22:31:24,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444954512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:24,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572060596] [2021-10-13 22:31:24,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:24,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:24,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:24,594 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:24,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 22:31:25,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:31:25,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:25,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:31:25,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:26,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572060596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:26,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:26,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:26,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094046113] [2021-10-13 22:31:26,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:26,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:26,146 INFO L87 Difference]: Start difference. First operand 3878 states and 10655 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:26,530 INFO L93 Difference]: Finished difference Result 6869 states and 18363 transitions. [2021-10-13 22:31:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:31:26,530 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:26,539 INFO L225 Difference]: With dead ends: 6869 [2021-10-13 22:31:26,551 INFO L226 Difference]: Without dead ends: 6487 [2021-10-13 22:31:26,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 329.6ms TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:31:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6487 states. [2021-10-13 22:31:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6487 to 3851. [2021-10-13 22:31:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3850 states have (on average 2.7511688311688314) internal successors, (10592), 3850 states have internal predecessors, (10592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 10592 transitions. [2021-10-13 22:31:26,628 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 10592 transitions. Word has length 57 [2021-10-13 22:31:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:26,628 INFO L470 AbstractCegarLoop]: Abstraction has 3851 states and 10592 transitions. [2021-10-13 22:31:26,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 10592 transitions. [2021-10-13 22:31:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:26,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:26,632 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:26,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:26,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 22:31:26,844 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:26,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1788375263, now seen corresponding path program 19 times [2021-10-13 22:31:26,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:26,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151935280] [2021-10-13 22:31:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:26,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:26,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:26,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151935280] [2021-10-13 22:31:26,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151935280] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:26,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006872481] [2021-10-13 22:31:26,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:26,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:26,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:26,917 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:26,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 22:31:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:28,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:28,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:28,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006872481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:28,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:28,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:28,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345515880] [2021-10-13 22:31:28,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:28,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:28,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:28,380 INFO L87 Difference]: Start difference. First operand 3851 states and 10592 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:28,615 INFO L93 Difference]: Finished difference Result 6208 states and 16499 transitions. [2021-10-13 22:31:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:31:28,615 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:28,623 INFO L225 Difference]: With dead ends: 6208 [2021-10-13 22:31:28,623 INFO L226 Difference]: Without dead ends: 6056 [2021-10-13 22:31:28,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 214.7ms TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:31:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-13 22:31:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 4166. [2021-10-13 22:31:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4166 states, 4165 states have (on average 2.7843937575030013) internal successors, (11597), 4165 states have internal predecessors, (11597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 11597 transitions. [2021-10-13 22:31:28,750 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 11597 transitions. Word has length 57 [2021-10-13 22:31:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:28,750 INFO L470 AbstractCegarLoop]: Abstraction has 4166 states and 11597 transitions. [2021-10-13 22:31:28,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 11597 transitions. [2021-10-13 22:31:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:28,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:28,755 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:28,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:28,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 22:31:28,971 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:28,973 INFO L82 PathProgramCache]: Analyzing trace with hash -531448733, now seen corresponding path program 20 times [2021-10-13 22:31:28,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:28,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559325398] [2021-10-13 22:31:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:28,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:29,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:29,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559325398] [2021-10-13 22:31:29,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559325398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:29,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588346516] [2021-10-13 22:31:29,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:29,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:29,040 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:29,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 22:31:30,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:30,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:30,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:30,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:30,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588346516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:30,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:30,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:30,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108320524] [2021-10-13 22:31:30,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:30,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:30,607 INFO L87 Difference]: Start difference. First operand 4166 states and 11597 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:31,108 INFO L93 Difference]: Finished difference Result 7842 states and 21090 transitions. [2021-10-13 22:31:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:31:31,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:31,119 INFO L225 Difference]: With dead ends: 7842 [2021-10-13 22:31:31,120 INFO L226 Difference]: Without dead ends: 7281 [2021-10-13 22:31:31,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 435.1ms TimeCoverageRelationStatistics Valid=503, Invalid=1567, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:31:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7281 states. [2021-10-13 22:31:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7281 to 3806. [2021-10-13 22:31:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3805 states have (on average 2.7821287779237847) internal successors, (10586), 3805 states have internal predecessors, (10586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 10586 transitions. [2021-10-13 22:31:31,182 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 10586 transitions. Word has length 57 [2021-10-13 22:31:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:31,183 INFO L470 AbstractCegarLoop]: Abstraction has 3806 states and 10586 transitions. [2021-10-13 22:31:31,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:31,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 10586 transitions. [2021-10-13 22:31:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:31,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:31,186 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:31,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:31,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:31,399 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash -72182933, now seen corresponding path program 12 times [2021-10-13 22:31:31,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:31,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023103067] [2021-10-13 22:31:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:31,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:31,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:31,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023103067] [2021-10-13 22:31:31,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023103067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:31,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156938295] [2021-10-13 22:31:31,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:31,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:31,503 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:31,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 22:31:32,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:31:32,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:32,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:32,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:33,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156938295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:33,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:33,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:33,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711300265] [2021-10-13 22:31:33,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:33,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:33,104 INFO L87 Difference]: Start difference. First operand 3806 states and 10586 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:33,364 INFO L93 Difference]: Finished difference Result 6434 states and 17119 transitions. [2021-10-13 22:31:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:31:33,364 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:33,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:33,373 INFO L225 Difference]: With dead ends: 6434 [2021-10-13 22:31:33,373 INFO L226 Difference]: Without dead ends: 6282 [2021-10-13 22:31:33,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 262.1ms TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:31:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-10-13 22:31:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 4016. [2021-10-13 22:31:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 4015 states have (on average 2.8084682440846827) internal successors, (11276), 4015 states have internal predecessors, (11276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 11276 transitions. [2021-10-13 22:31:33,424 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 11276 transitions. Word has length 57 [2021-10-13 22:31:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:33,425 INFO L470 AbstractCegarLoop]: Abstraction has 4016 states and 11276 transitions. [2021-10-13 22:31:33,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 11276 transitions. [2021-10-13 22:31:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:33,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:33,428 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:33,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:33,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-13 22:31:33,647 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:33,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:33,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1902960367, now seen corresponding path program 13 times [2021-10-13 22:31:33,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:33,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396016960] [2021-10-13 22:31:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:33,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:33,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:33,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396016960] [2021-10-13 22:31:33,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396016960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:33,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111174263] [2021-10-13 22:31:33,747 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:33,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:33,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:33,748 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:33,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 22:31:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:35,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:35,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:35,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111174263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:35,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:35,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:35,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560413021] [2021-10-13 22:31:35,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:35,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:35,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:35,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:35,342 INFO L87 Difference]: Start difference. First operand 4016 states and 11276 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:35,863 INFO L93 Difference]: Finished difference Result 8397 states and 22467 transitions. [2021-10-13 22:31:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 22:31:35,864 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:35,924 INFO L225 Difference]: With dead ends: 8397 [2021-10-13 22:31:35,924 INFO L226 Difference]: Without dead ends: 7839 [2021-10-13 22:31:35,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 464.4ms TimeCoverageRelationStatistics Valid=681, Invalid=2399, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:31:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7839 states. [2021-10-13 22:31:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7839 to 3871. [2021-10-13 22:31:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3871 states, 3870 states have (on average 2.77312661498708) internal successors, (10732), 3870 states have internal predecessors, (10732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 10732 transitions. [2021-10-13 22:31:35,984 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 10732 transitions. Word has length 57 [2021-10-13 22:31:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:35,984 INFO L470 AbstractCegarLoop]: Abstraction has 3871 states and 10732 transitions. [2021-10-13 22:31:35,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 10732 transitions. [2021-10-13 22:31:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:35,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:35,988 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:36,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:36,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:36,216 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:36,216 INFO L82 PathProgramCache]: Analyzing trace with hash -24893345, now seen corresponding path program 14 times [2021-10-13 22:31:36,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:36,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414663718] [2021-10-13 22:31:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:36,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:36,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:36,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414663718] [2021-10-13 22:31:36,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414663718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:36,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65504379] [2021-10-13 22:31:36,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:36,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:36,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:36,330 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:36,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 22:31:37,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:37,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:37,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:37,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:37,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65504379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:37,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:37,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:37,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925939150] [2021-10-13 22:31:37,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:37,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:37,892 INFO L87 Difference]: Start difference. First operand 3871 states and 10732 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:38,292 INFO L93 Difference]: Finished difference Result 7159 states and 19136 transitions. [2021-10-13 22:31:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:31:38,292 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:38,301 INFO L225 Difference]: With dead ends: 7159 [2021-10-13 22:31:38,301 INFO L226 Difference]: Without dead ends: 7007 [2021-10-13 22:31:38,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 368.1ms TimeCoverageRelationStatistics Valid=410, Invalid=1312, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:31:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-10-13 22:31:38,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 4316. [2021-10-13 22:31:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 4315 states have (on average 2.8127462340672076) internal successors, (12137), 4315 states have internal predecessors, (12137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 12137 transitions. [2021-10-13 22:31:38,358 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 12137 transitions. Word has length 57 [2021-10-13 22:31:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:38,358 INFO L470 AbstractCegarLoop]: Abstraction has 4316 states and 12137 transitions. [2021-10-13 22:31:38,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 12137 transitions. [2021-10-13 22:31:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:38,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:38,362 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:38,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:38,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:38,574 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:38,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:38,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1950249955, now seen corresponding path program 15 times [2021-10-13 22:31:38,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:38,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971204223] [2021-10-13 22:31:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:38,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:38,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:38,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971204223] [2021-10-13 22:31:38,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971204223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:38,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420472465] [2021-10-13 22:31:38,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:38,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:38,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:38,697 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:38,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 22:31:40,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:31:40,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:40,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:40,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:40,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420472465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:40,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:40,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:40,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571188127] [2021-10-13 22:31:40,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:40,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:40,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:40,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:40,425 INFO L87 Difference]: Start difference. First operand 4316 states and 12137 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:41,012 INFO L93 Difference]: Finished difference Result 9373 states and 25124 transitions. [2021-10-13 22:31:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 22:31:41,013 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:41,024 INFO L225 Difference]: With dead ends: 9373 [2021-10-13 22:31:41,025 INFO L226 Difference]: Without dead ends: 8767 [2021-10-13 22:31:41,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 489.2ms TimeCoverageRelationStatistics Valid=739, Invalid=2683, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:31:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2021-10-13 22:31:41,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 4223. [2021-10-13 22:31:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 4222 states have (on average 2.780909521553766) internal successors, (11741), 4222 states have internal predecessors, (11741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 11741 transitions. [2021-10-13 22:31:41,089 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 11741 transitions. Word has length 57 [2021-10-13 22:31:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:41,089 INFO L470 AbstractCegarLoop]: Abstraction has 4223 states and 11741 transitions. [2021-10-13 22:31:41,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 11741 transitions. [2021-10-13 22:31:41,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:41,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:41,093 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:41,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-13 22:31:41,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-13 22:31:41,313 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:41,313 INFO L82 PathProgramCache]: Analyzing trace with hash -637563609, now seen corresponding path program 16 times [2021-10-13 22:31:41,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:41,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594712834] [2021-10-13 22:31:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:41,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:41,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:41,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594712834] [2021-10-13 22:31:41,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594712834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:41,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492256960] [2021-10-13 22:31:41,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:41,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:41,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:41,401 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:41,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 22:31:42,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:42,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:42,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:42,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:43,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492256960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:43,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:43,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:43,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048515088] [2021-10-13 22:31:43,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:43,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:43,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:43,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:43,212 INFO L87 Difference]: Start difference. First operand 4223 states and 11741 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:43,629 INFO L93 Difference]: Finished difference Result 6892 states and 17711 transitions. [2021-10-13 22:31:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:31:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:43,638 INFO L225 Difference]: With dead ends: 6892 [2021-10-13 22:31:43,638 INFO L226 Difference]: Without dead ends: 6740 [2021-10-13 22:31:43,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 386.9ms TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:31:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2021-10-13 22:31:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 4286. [2021-10-13 22:31:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 2.779229871645274) internal successors, (11909), 4285 states have internal predecessors, (11909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 11909 transitions. [2021-10-13 22:31:43,691 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 11909 transitions. Word has length 57 [2021-10-13 22:31:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:43,691 INFO L470 AbstractCegarLoop]: Abstraction has 4286 states and 11909 transitions. [2021-10-13 22:31:43,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 11909 transitions. [2021-10-13 22:31:43,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:43,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:43,695 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:43,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:43,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-13 22:31:43,906 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:43,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1213293229, now seen corresponding path program 17 times [2021-10-13 22:31:43,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:43,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426189638] [2021-10-13 22:31:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:43,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:44,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:44,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426189638] [2021-10-13 22:31:44,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426189638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:44,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731732844] [2021-10-13 22:31:44,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:44,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:44,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:44,025 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:44,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 22:31:45,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:31:45,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:45,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:45,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:45,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731732844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:45,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:45,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:45,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709710526] [2021-10-13 22:31:45,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:45,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:45,858 INFO L87 Difference]: Start difference. First operand 4286 states and 11909 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:46,357 INFO L93 Difference]: Finished difference Result 7772 states and 20736 transitions. [2021-10-13 22:31:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:31:46,358 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:46,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:46,367 INFO L225 Difference]: With dead ends: 7772 [2021-10-13 22:31:46,367 INFO L226 Difference]: Without dead ends: 7620 [2021-10-13 22:31:46,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 447.9ms TimeCoverageRelationStatistics Valid=498, Invalid=1572, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:31:46,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2021-10-13 22:31:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 4601. [2021-10-13 22:31:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 4600 states have (on average 2.807391304347826) internal successors, (12914), 4600 states have internal predecessors, (12914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 12914 transitions. [2021-10-13 22:31:46,422 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 12914 transitions. Word has length 57 [2021-10-13 22:31:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:46,422 INFO L470 AbstractCegarLoop]: Abstraction has 4601 states and 12914 transitions. [2021-10-13 22:31:46,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 12914 transitions. [2021-10-13 22:31:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:46,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:46,427 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:46,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:46,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 22:31:46,641 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:46,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:46,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1106530767, now seen corresponding path program 18 times [2021-10-13 22:31:46,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:46,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977290988] [2021-10-13 22:31:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:46,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:46,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:46,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977290988] [2021-10-13 22:31:46,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977290988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:46,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311518632] [2021-10-13 22:31:46,728 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:46,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:46,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:46,730 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:46,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 22:31:48,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:31:48,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:48,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:48,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:48,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311518632] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:48,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:48,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:48,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323155832] [2021-10-13 22:31:48,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:48,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:48,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:48,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:48,637 INFO L87 Difference]: Start difference. First operand 4601 states and 12914 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:49,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:49,546 INFO L93 Difference]: Finished difference Result 9919 states and 26549 transitions. [2021-10-13 22:31:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 22:31:49,547 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:49,559 INFO L225 Difference]: With dead ends: 9919 [2021-10-13 22:31:49,559 INFO L226 Difference]: Without dead ends: 9209 [2021-10-13 22:31:49,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 798.4ms TimeCoverageRelationStatistics Valid=864, Invalid=3168, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 22:31:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9209 states. [2021-10-13 22:31:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9209 to 4416. [2021-10-13 22:31:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4416 states, 4415 states have (on average 2.7807474518686295) internal successors, (12277), 4415 states have internal predecessors, (12277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 12277 transitions. [2021-10-13 22:31:49,652 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 12277 transitions. Word has length 57 [2021-10-13 22:31:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:49,652 INFO L470 AbstractCegarLoop]: Abstraction has 4416 states and 12277 transitions. [2021-10-13 22:31:49,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 12277 transitions. [2021-10-13 22:31:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:31:49,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:49,656 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:49,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:49,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 22:31:49,878 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:49,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:49,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1086600816, now seen corresponding path program 19 times [2021-10-13 22:31:49,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:49,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786388282] [2021-10-13 22:31:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:49,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:49,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:49,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786388282] [2021-10-13 22:31:49,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786388282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:49,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434186180] [2021-10-13 22:31:49,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:49,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:49,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:49,980 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:49,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 22:31:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:51,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:31:51,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:51,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434186180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:51,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:51,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:31:51,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656888483] [2021-10-13 22:31:51,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:31:51,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:31:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:31:51,879 INFO L87 Difference]: Start difference. First operand 4416 states and 12277 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:52,036 INFO L93 Difference]: Finished difference Result 6063 states and 15993 transitions. [2021-10-13 22:31:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:31:52,036 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:31:52,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:52,043 INFO L225 Difference]: With dead ends: 6063 [2021-10-13 22:31:52,043 INFO L226 Difference]: Without dead ends: 5911 [2021-10-13 22:31:52,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 194.7ms TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:31:52,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-10-13 22:31:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 4491. [2021-10-13 22:31:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 2.771046770601336) internal successors, (12442), 4490 states have internal predecessors, (12442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 12442 transitions. [2021-10-13 22:31:52,096 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 12442 transitions. Word has length 62 [2021-10-13 22:31:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:52,096 INFO L470 AbstractCegarLoop]: Abstraction has 4491 states and 12442 transitions. [2021-10-13 22:31:52,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 12442 transitions. [2021-10-13 22:31:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:31:52,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:52,100 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:52,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:52,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:52,307 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:52,307 INFO L82 PathProgramCache]: Analyzing trace with hash -154199258, now seen corresponding path program 20 times [2021-10-13 22:31:52,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:52,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157626027] [2021-10-13 22:31:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:52,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:52,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:52,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157626027] [2021-10-13 22:31:52,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157626027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:52,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10184650] [2021-10-13 22:31:52,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:52,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:52,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:52,436 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:52,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 22:31:53,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:53,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:53,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:31:53,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:54,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10184650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:54,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:54,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:31:54,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751375747] [2021-10-13 22:31:54,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:31:54,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:54,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:31:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:31:54,345 INFO L87 Difference]: Start difference. First operand 4491 states and 12442 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:54,610 INFO L93 Difference]: Finished difference Result 6288 states and 16440 transitions. [2021-10-13 22:31:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:31:54,610 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:31:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:54,618 INFO L225 Difference]: With dead ends: 6288 [2021-10-13 22:31:54,618 INFO L226 Difference]: Without dead ends: 6136 [2021-10-13 22:31:54,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 315.1ms TimeCoverageRelationStatistics Valid=291, Invalid=765, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:31:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-10-13 22:31:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 4506. [2021-10-13 22:31:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4505 states have (on average 2.7691453940066593) internal successors, (12475), 4505 states have internal predecessors, (12475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12475 transitions. [2021-10-13 22:31:54,673 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12475 transitions. Word has length 62 [2021-10-13 22:31:54,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:54,673 INFO L470 AbstractCegarLoop]: Abstraction has 4506 states and 12475 transitions. [2021-10-13 22:31:54,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12475 transitions. [2021-10-13 22:31:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:31:54,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:54,677 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:54,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:54,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 22:31:54,897 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:54,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:54,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1371346866, now seen corresponding path program 21 times [2021-10-13 22:31:54,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:54,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693576266] [2021-10-13 22:31:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:54,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:55,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:55,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693576266] [2021-10-13 22:31:55,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693576266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:55,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136716677] [2021-10-13 22:31:55,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:55,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:55,023 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:55,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 22:31:56,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:31:56,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:56,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:31:56,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:57,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136716677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:57,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:57,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:31:57,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986883922] [2021-10-13 22:31:57,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:31:57,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:31:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:31:57,205 INFO L87 Difference]: Start difference. First operand 4506 states and 12475 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:57,397 INFO L93 Difference]: Finished difference Result 6357 states and 16571 transitions. [2021-10-13 22:31:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:31:57,398 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:31:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:57,406 INFO L225 Difference]: With dead ends: 6357 [2021-10-13 22:31:57,406 INFO L226 Difference]: Without dead ends: 6205 [2021-10-13 22:31:57,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 261.9ms TimeCoverageRelationStatistics Valid=312, Invalid=878, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:31:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2021-10-13 22:31:57,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 4631. [2021-10-13 22:31:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4631 states, 4630 states have (on average 2.75377969762419) internal successors, (12750), 4630 states have internal predecessors, (12750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4631 states to 4631 states and 12750 transitions. [2021-10-13 22:31:57,459 INFO L78 Accepts]: Start accepts. Automaton has 4631 states and 12750 transitions. Word has length 62 [2021-10-13 22:31:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:57,460 INFO L470 AbstractCegarLoop]: Abstraction has 4631 states and 12750 transitions. [2021-10-13 22:31:57,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4631 states and 12750 transitions. [2021-10-13 22:31:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:31:57,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:57,464 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:31:57,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:57,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:57,684 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:57,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:57,684 INFO L82 PathProgramCache]: Analyzing trace with hash 995646372, now seen corresponding path program 22 times [2021-10-13 22:31:57,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:57,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057731741] [2021-10-13 22:31:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:57,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:57,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:57,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057731741] [2021-10-13 22:31:57,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057731741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:57,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552411001] [2021-10-13 22:31:57,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:57,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:57,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:57,804 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:31:57,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 22:31:59,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:59,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:59,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:31:59,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:59,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552411001] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:59,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:59,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:31:59,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967376735] [2021-10-13 22:31:59,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:31:59,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:31:59,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:31:59,869 INFO L87 Difference]: Start difference. First operand 4631 states and 12750 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:00,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:00,223 INFO L93 Difference]: Finished difference Result 6752 states and 17504 transitions. [2021-10-13 22:32:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:32:00,223 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:00,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:00,232 INFO L225 Difference]: With dead ends: 6752 [2021-10-13 22:32:00,232 INFO L226 Difference]: Without dead ends: 6360 [2021-10-13 22:32:00,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 334.7ms TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:32:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2021-10-13 22:32:00,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 4671. [2021-10-13 22:32:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 4670 states have (on average 2.747323340471092) internal successors, (12830), 4670 states have internal predecessors, (12830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 12830 transitions. [2021-10-13 22:32:00,310 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 12830 transitions. Word has length 62 [2021-10-13 22:32:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:00,310 INFO L470 AbstractCegarLoop]: Abstraction has 4671 states and 12830 transitions. [2021-10-13 22:32:00,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 12830 transitions. [2021-10-13 22:32:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:00,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:00,314 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:00,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:00,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-10-13 22:32:00,527 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:00,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1755561872, now seen corresponding path program 23 times [2021-10-13 22:32:00,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:00,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413228885] [2021-10-13 22:32:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:00,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:00,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:00,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413228885] [2021-10-13 22:32:00,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413228885] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:00,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016286346] [2021-10-13 22:32:00,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:00,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:00,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:00,640 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:00,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 22:32:02,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:32:02,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:02,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:02,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:02,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016286346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:02,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:02,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:02,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241269320] [2021-10-13 22:32:02,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:02,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:02,828 INFO L87 Difference]: Start difference. First operand 4671 states and 12830 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:03,156 INFO L93 Difference]: Finished difference Result 6458 states and 16790 transitions. [2021-10-13 22:32:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:32:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:03,164 INFO L225 Difference]: With dead ends: 6458 [2021-10-13 22:32:03,165 INFO L226 Difference]: Without dead ends: 6306 [2021-10-13 22:32:03,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 347.8ms TimeCoverageRelationStatistics Valid=363, Invalid=1043, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:32:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-10-13 22:32:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 4646. [2021-10-13 22:32:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 4645 states have (on average 2.7502691065662) internal successors, (12775), 4645 states have internal predecessors, (12775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 12775 transitions. [2021-10-13 22:32:03,218 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 12775 transitions. Word has length 62 [2021-10-13 22:32:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:03,219 INFO L470 AbstractCegarLoop]: Abstraction has 4646 states and 12775 transitions. [2021-10-13 22:32:03,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 12775 transitions. [2021-10-13 22:32:03,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:03,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:03,223 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:03,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:03,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:03,443 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1223486810, now seen corresponding path program 24 times [2021-10-13 22:32:03,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:03,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776547535] [2021-10-13 22:32:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:03,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:03,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:03,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776547535] [2021-10-13 22:32:03,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776547535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:03,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719731410] [2021-10-13 22:32:03,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:03,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:03,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:03,567 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:03,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 22:32:05,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:32:05,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:05,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:05,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:05,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719731410] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:05,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:05,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:05,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762771315] [2021-10-13 22:32:05,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:05,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:05,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:05,805 INFO L87 Difference]: Start difference. First operand 4646 states and 12775 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:06,141 INFO L93 Difference]: Finished difference Result 6415 states and 16697 transitions. [2021-10-13 22:32:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:32:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:06,150 INFO L225 Difference]: With dead ends: 6415 [2021-10-13 22:32:06,150 INFO L226 Difference]: Without dead ends: 6263 [2021-10-13 22:32:06,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 341.1ms TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:32:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2021-10-13 22:32:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 4776. [2021-10-13 22:32:06,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4775 states have (on average 2.735287958115183) internal successors, (13061), 4775 states have internal predecessors, (13061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 13061 transitions. [2021-10-13 22:32:06,216 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 13061 transitions. Word has length 62 [2021-10-13 22:32:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:06,216 INFO L470 AbstractCegarLoop]: Abstraction has 4776 states and 13061 transitions. [2021-10-13 22:32:06,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 13061 transitions. [2021-10-13 22:32:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:06,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:06,221 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:06,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-13 22:32:06,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:06,435 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:06,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:06,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1599187304, now seen corresponding path program 25 times [2021-10-13 22:32:06,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:06,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116520286] [2021-10-13 22:32:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:06,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:06,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:06,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116520286] [2021-10-13 22:32:06,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116520286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:06,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301805164] [2021-10-13 22:32:06,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:06,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:06,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:06,540 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:06,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 22:32:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:08,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:08,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:08,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301805164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:08,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:08,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:08,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275542110] [2021-10-13 22:32:08,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:08,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:08,832 INFO L87 Difference]: Start difference. First operand 4776 states and 13061 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:09,206 INFO L93 Difference]: Finished difference Result 6688 states and 17240 transitions. [2021-10-13 22:32:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:32:09,207 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:09,216 INFO L225 Difference]: With dead ends: 6688 [2021-10-13 22:32:09,216 INFO L226 Difference]: Without dead ends: 6536 [2021-10-13 22:32:09,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 369.6ms TimeCoverageRelationStatistics Valid=432, Invalid=1208, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:32:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2021-10-13 22:32:09,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 4801. [2021-10-13 22:32:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 4800 states have (on average 2.7325) internal successors, (13116), 4800 states have internal predecessors, (13116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 13116 transitions. [2021-10-13 22:32:09,285 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 13116 transitions. Word has length 62 [2021-10-13 22:32:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:09,285 INFO L470 AbstractCegarLoop]: Abstraction has 4801 states and 13116 transitions. [2021-10-13 22:32:09,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 13116 transitions. [2021-10-13 22:32:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:09,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:09,290 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:09,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:09,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 22:32:09,507 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:09,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1188355682, now seen corresponding path program 21 times [2021-10-13 22:32:09,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:09,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584190010] [2021-10-13 22:32:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:09,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:09,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:09,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584190010] [2021-10-13 22:32:09,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584190010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:09,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126374869] [2021-10-13 22:32:09,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:09,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:09,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:09,615 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:09,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 22:32:11,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:32:11,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:11,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:11,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:11,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126374869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:11,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:11,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:11,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567283898] [2021-10-13 22:32:11,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:11,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:11,849 INFO L87 Difference]: Start difference. First operand 4801 states and 13116 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:12,271 INFO L93 Difference]: Finished difference Result 6623 states and 17241 transitions. [2021-10-13 22:32:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:32:12,272 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:12,280 INFO L225 Difference]: With dead ends: 6623 [2021-10-13 22:32:12,281 INFO L226 Difference]: Without dead ends: 6231 [2021-10-13 22:32:12,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 425.7ms TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:32:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2021-10-13 22:32:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 4825. [2021-10-13 22:32:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 2.727197346600332) internal successors, (13156), 4824 states have internal predecessors, (13156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 13156 transitions. [2021-10-13 22:32:12,340 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 13156 transitions. Word has length 62 [2021-10-13 22:32:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:12,340 INFO L470 AbstractCegarLoop]: Abstraction has 4825 states and 13156 transitions. [2021-10-13 22:32:12,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 13156 transitions. [2021-10-13 22:32:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:12,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:12,345 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:12,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:12,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 22:32:12,566 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:12,567 INFO L82 PathProgramCache]: Analyzing trace with hash 407535224, now seen corresponding path program 26 times [2021-10-13 22:32:12,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:12,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071338244] [2021-10-13 22:32:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:12,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:12,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:12,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071338244] [2021-10-13 22:32:12,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071338244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:12,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398705990] [2021-10-13 22:32:12,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:12,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:12,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:12,670 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:12,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 22:32:14,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:14,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:14,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:14,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:15,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398705990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:15,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:15,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:15,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579769734] [2021-10-13 22:32:15,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:15,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:15,107 INFO L87 Difference]: Start difference. First operand 4825 states and 13156 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:15,454 INFO L93 Difference]: Finished difference Result 6324 states and 16500 transitions. [2021-10-13 22:32:15,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:32:15,454 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:15,462 INFO L225 Difference]: With dead ends: 6324 [2021-10-13 22:32:15,462 INFO L226 Difference]: Without dead ends: 6172 [2021-10-13 22:32:15,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 372.2ms TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:32:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2021-10-13 22:32:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 4760. [2021-10-13 22:32:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4759 states have (on average 2.7343979827694893) internal successors, (13013), 4759 states have internal predecessors, (13013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 13013 transitions. [2021-10-13 22:32:15,548 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 13013 transitions. Word has length 62 [2021-10-13 22:32:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:15,548 INFO L470 AbstractCegarLoop]: Abstraction has 4760 states and 13013 transitions. [2021-10-13 22:32:15,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 13013 transitions. [2021-10-13 22:32:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:15,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:15,552 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:15,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:15,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-13 22:32:15,773 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:15,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297982, now seen corresponding path program 27 times [2021-10-13 22:32:15,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:15,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057849517] [2021-10-13 22:32:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:15,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:15,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:15,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057849517] [2021-10-13 22:32:15,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057849517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:15,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486547124] [2021-10-13 22:32:15,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:15,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:15,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:15,873 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:15,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 22:32:17,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:17,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:17,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:17,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:18,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486547124] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:18,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:18,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:18,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765164219] [2021-10-13 22:32:18,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:18,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:18,191 INFO L87 Difference]: Start difference. First operand 4760 states and 13013 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:18,413 INFO L93 Difference]: Finished difference Result 6607 states and 17089 transitions. [2021-10-13 22:32:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:18,414 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:18,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:18,422 INFO L225 Difference]: With dead ends: 6607 [2021-10-13 22:32:18,422 INFO L226 Difference]: Without dead ends: 6455 [2021-10-13 22:32:18,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 243.8ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:32:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6455 states. [2021-10-13 22:32:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 4810. [2021-10-13 22:32:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 2.7288417550426285) internal successors, (13123), 4809 states have internal predecessors, (13123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 13123 transitions. [2021-10-13 22:32:18,479 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 13123 transitions. Word has length 62 [2021-10-13 22:32:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:18,479 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 13123 transitions. [2021-10-13 22:32:18,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 13123 transitions. [2021-10-13 22:32:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:18,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:18,484 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:18,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-13 22:32:18,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-13 22:32:18,684 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:18,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1707267756, now seen corresponding path program 28 times [2021-10-13 22:32:18,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:18,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910074053] [2021-10-13 22:32:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:18,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:18,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:18,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910074053] [2021-10-13 22:32:18,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910074053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:18,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789756156] [2021-10-13 22:32:18,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:18,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:18,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:18,799 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:18,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 22:32:20,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:20,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:20,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:20,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:21,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789756156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:21,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:21,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:21,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763710724] [2021-10-13 22:32:21,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:21,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:21,311 INFO L87 Difference]: Start difference. First operand 4810 states and 13123 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:21,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:21,548 INFO L93 Difference]: Finished difference Result 6937 states and 17751 transitions. [2021-10-13 22:32:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:32:21,549 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:21,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:21,557 INFO L225 Difference]: With dead ends: 6937 [2021-10-13 22:32:21,557 INFO L226 Difference]: Without dead ends: 6785 [2021-10-13 22:32:21,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 264.7ms TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:32:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6785 states. [2021-10-13 22:32:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6785 to 4810. [2021-10-13 22:32:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 2.7288417550426285) internal successors, (13123), 4809 states have internal predecessors, (13123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 13123 transitions. [2021-10-13 22:32:21,618 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 13123 transitions. Word has length 62 [2021-10-13 22:32:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:21,618 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 13123 transitions. [2021-10-13 22:32:21,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 13123 transitions. [2021-10-13 22:32:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:21,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:21,622 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:21,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:21,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 22:32:21,834 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:21,834 INFO L82 PathProgramCache]: Analyzing trace with hash -181721632, now seen corresponding path program 29 times [2021-10-13 22:32:21,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:21,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837713775] [2021-10-13 22:32:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:21,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:21,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:21,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837713775] [2021-10-13 22:32:21,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837713775] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:21,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261442492] [2021-10-13 22:32:21,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:21,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:21,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:21,924 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:21,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 22:32:24,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:32:24,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:24,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:24,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:24,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261442492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:24,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:24,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:24,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184441238] [2021-10-13 22:32:24,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:24,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:24,448 INFO L87 Difference]: Start difference. First operand 4810 states and 13123 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:24,833 INFO L93 Difference]: Finished difference Result 6998 states and 17858 transitions. [2021-10-13 22:32:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:32:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:24,842 INFO L225 Difference]: With dead ends: 6998 [2021-10-13 22:32:24,842 INFO L226 Difference]: Without dead ends: 6846 [2021-10-13 22:32:24,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 362.0ms TimeCoverageRelationStatistics Valid=413, Invalid=1227, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:32:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6846 states. [2021-10-13 22:32:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6846 to 4885. [2021-10-13 22:32:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4885 states, 4884 states have (on average 2.720720720720721) internal successors, (13288), 4884 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 13288 transitions. [2021-10-13 22:32:24,901 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 13288 transitions. Word has length 62 [2021-10-13 22:32:24,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:24,901 INFO L470 AbstractCegarLoop]: Abstraction has 4885 states and 13288 transitions. [2021-10-13 22:32:24,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 13288 transitions. [2021-10-13 22:32:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:24,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:24,905 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:24,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:25,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-13 22:32:25,123 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash -557422126, now seen corresponding path program 30 times [2021-10-13 22:32:25,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:25,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83766432] [2021-10-13 22:32:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:25,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:25,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:25,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83766432] [2021-10-13 22:32:25,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83766432] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:25,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798641796] [2021-10-13 22:32:25,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:25,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:25,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:25,291 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:25,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 22:32:27,527 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:27,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:27,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:27,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:27,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798641796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:27,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:27,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:27,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058051585] [2021-10-13 22:32:27,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:27,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:27,930 INFO L87 Difference]: Start difference. First operand 4885 states and 13288 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:28,373 INFO L93 Difference]: Finished difference Result 7333 states and 18651 transitions. [2021-10-13 22:32:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:32:28,373 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:28,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:28,384 INFO L225 Difference]: With dead ends: 7333 [2021-10-13 22:32:28,384 INFO L226 Difference]: Without dead ends: 6941 [2021-10-13 22:32:28,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 415.4ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:32:28,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2021-10-13 22:32:28,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 4910. [2021-10-13 22:32:28,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4910 states, 4909 states have (on average 2.7180688531269097) internal successors, (13343), 4909 states have internal predecessors, (13343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 13343 transitions. [2021-10-13 22:32:28,457 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 13343 transitions. Word has length 62 [2021-10-13 22:32:28,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:28,457 INFO L470 AbstractCegarLoop]: Abstraction has 4910 states and 13343 transitions. [2021-10-13 22:32:28,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 13343 transitions. [2021-10-13 22:32:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:28,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:28,462 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:28,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:28,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:28,672 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:28,672 INFO L82 PathProgramCache]: Analyzing trace with hash 202493374, now seen corresponding path program 31 times [2021-10-13 22:32:28,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:28,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791771966] [2021-10-13 22:32:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:28,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:28,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:28,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791771966] [2021-10-13 22:32:28,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791771966] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:28,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465786478] [2021-10-13 22:32:28,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:28,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:28,793 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:28,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 22:32:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:30,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:30,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:31,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465786478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:31,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:31,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:31,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799120622] [2021-10-13 22:32:31,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:31,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:31,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:31,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:31,357 INFO L87 Difference]: Start difference. First operand 4910 states and 13343 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:31,718 INFO L93 Difference]: Finished difference Result 6988 states and 17828 transitions. [2021-10-13 22:32:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:32:31,718 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:31,727 INFO L225 Difference]: With dead ends: 6988 [2021-10-13 22:32:31,727 INFO L226 Difference]: Without dead ends: 6836 [2021-10-13 22:32:31,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 363.1ms TimeCoverageRelationStatistics Valid=383, Invalid=1177, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:32:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6836 states. [2021-10-13 22:32:31,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6836 to 4860. [2021-10-13 22:32:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4860 states, 4859 states have (on average 2.723399876517802) internal successors, (13233), 4859 states have internal predecessors, (13233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 13233 transitions. [2021-10-13 22:32:31,785 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 13233 transitions. Word has length 62 [2021-10-13 22:32:31,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:31,785 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 13233 transitions. [2021-10-13 22:32:31,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 13233 transitions. [2021-10-13 22:32:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:31,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:31,790 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:31,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:32,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:32,003 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:32,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1546376722, now seen corresponding path program 32 times [2021-10-13 22:32:32,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:32,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060584186] [2021-10-13 22:32:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:32,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:32,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:32,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060584186] [2021-10-13 22:32:32,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060584186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:32,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826080363] [2021-10-13 22:32:32,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:32,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:32,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:32,093 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:32,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 22:32:34,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:34,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:34,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:34,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:34,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826080363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:34,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:34,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:34,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703684442] [2021-10-13 22:32:34,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:34,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:34,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:34,695 INFO L87 Difference]: Start difference. First operand 4860 states and 13233 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:34,935 INFO L93 Difference]: Finished difference Result 6822 states and 17514 transitions. [2021-10-13 22:32:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:34,936 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:34,944 INFO L225 Difference]: With dead ends: 6822 [2021-10-13 22:32:34,944 INFO L226 Difference]: Without dead ends: 6670 [2021-10-13 22:32:34,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 242.1ms TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:32:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6670 states. [2021-10-13 22:32:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6670 to 4885. [2021-10-13 22:32:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4885 states, 4884 states have (on average 2.720720720720721) internal successors, (13288), 4884 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 13288 transitions. [2021-10-13 22:32:34,999 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 13288 transitions. Word has length 62 [2021-10-13 22:32:34,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:34,999 INFO L470 AbstractCegarLoop]: Abstraction has 4885 states and 13288 transitions. [2021-10-13 22:32:34,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 13288 transitions. [2021-10-13 22:32:35,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:35,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:35,004 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:35,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:35,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:35,211 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:35,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:35,211 INFO L82 PathProgramCache]: Analyzing trace with hash -613975164, now seen corresponding path program 33 times [2021-10-13 22:32:35,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:35,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809364787] [2021-10-13 22:32:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:35,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:35,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:35,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809364787] [2021-10-13 22:32:35,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809364787] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:35,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781686984] [2021-10-13 22:32:35,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:35,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:35,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:35,306 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:35,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 22:32:37,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:37,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:37,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:37,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:37,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781686984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:37,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:37,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:37,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034002409] [2021-10-13 22:32:37,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:37,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:37,905 INFO L87 Difference]: Start difference. First operand 4885 states and 13288 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:38,179 INFO L93 Difference]: Finished difference Result 7127 states and 18121 transitions. [2021-10-13 22:32:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:32:38,180 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:38,190 INFO L225 Difference]: With dead ends: 7127 [2021-10-13 22:32:38,191 INFO L226 Difference]: Without dead ends: 6975 [2021-10-13 22:32:38,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 269.1ms TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:32:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6975 states. [2021-10-13 22:32:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6975 to 4885. [2021-10-13 22:32:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4885 states, 4884 states have (on average 2.720720720720721) internal successors, (13288), 4884 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 13288 transitions. [2021-10-13 22:32:38,252 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 13288 transitions. Word has length 62 [2021-10-13 22:32:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:38,253 INFO L470 AbstractCegarLoop]: Abstraction has 4885 states and 13288 transitions. [2021-10-13 22:32:38,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 13288 transitions. [2021-10-13 22:32:38,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:38,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:38,257 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:38,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:38,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:38,479 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:38,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1286289854, now seen corresponding path program 34 times [2021-10-13 22:32:38,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:38,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898301687] [2021-10-13 22:32:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:38,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:38,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:38,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898301687] [2021-10-13 22:32:38,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898301687] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:38,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576036169] [2021-10-13 22:32:38,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:38,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:38,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:38,574 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:38,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 22:32:40,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:40,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:40,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:40,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:41,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576036169] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:41,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:41,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:41,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966329231] [2021-10-13 22:32:41,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:41,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:41,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:41,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:41,231 INFO L87 Difference]: Start difference. First operand 4885 states and 13288 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:41,437 INFO L93 Difference]: Finished difference Result 6852 states and 17594 transitions. [2021-10-13 22:32:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:32:41,437 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:32:41,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:41,447 INFO L225 Difference]: With dead ends: 6852 [2021-10-13 22:32:41,447 INFO L226 Difference]: Without dead ends: 6700 [2021-10-13 22:32:41,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 218.8ms TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:32:41,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-10-13 22:32:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 4860. [2021-10-13 22:32:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4860 states, 4859 states have (on average 2.723399876517802) internal successors, (13233), 4859 states have internal predecessors, (13233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 13233 transitions. [2021-10-13 22:32:41,548 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 13233 transitions. Word has length 62 [2021-10-13 22:32:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:41,548 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 13233 transitions. [2021-10-13 22:32:41,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 13233 transitions. [2021-10-13 22:32:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:41,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:41,552 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:41,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:41,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-13 22:32:41,763 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:41,764 INFO L82 PathProgramCache]: Analyzing trace with hash 535373106, now seen corresponding path program 35 times [2021-10-13 22:32:41,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:41,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243421815] [2021-10-13 22:32:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:41,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:41,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:41,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243421815] [2021-10-13 22:32:41,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243421815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:41,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954358901] [2021-10-13 22:32:41,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:41,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:41,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:41,854 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:41,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 22:32:44,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:44,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:44,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:44,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:44,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954358901] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:44,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:44,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:32:44,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082891068] [2021-10-13 22:32:44,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:32:44,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:32:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:44,640 INFO L87 Difference]: Start difference. First operand 4860 states and 13233 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:22,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:22,622 INFO L93 Difference]: Finished difference Result 10613 states and 27610 transitions. [2021-10-13 22:35:22,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:35:22,622 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:22,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:22,637 INFO L225 Difference]: With dead ends: 10613 [2021-10-13 22:35:22,637 INFO L226 Difference]: Without dead ends: 9999 [2021-10-13 22:35:22,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 47202.0ms TimeCoverageRelationStatistics Valid=609, Invalid=2130, Unknown=17, NotChecked=0, Total=2756 [2021-10-13 22:35:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9999 states. [2021-10-13 22:35:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9999 to 4835. [2021-10-13 22:35:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 4834 states have (on average 2.7261067438973936) internal successors, (13178), 4834 states have internal predecessors, (13178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 13178 transitions. [2021-10-13 22:35:22,734 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 13178 transitions. Word has length 62 [2021-10-13 22:35:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:22,734 INFO L470 AbstractCegarLoop]: Abstraction has 4835 states and 13178 transitions. [2021-10-13 22:35:22,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 13178 transitions. [2021-10-13 22:35:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:22,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:22,738 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:22,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-13 22:35:22,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-13 22:35:22,960 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:22,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1694874328, now seen corresponding path program 36 times [2021-10-13 22:35:22,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:22,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377240272] [2021-10-13 22:35:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:22,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:23,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:23,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377240272] [2021-10-13 22:35:23,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377240272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:23,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078126878] [2021-10-13 22:35:23,060 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:23,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:23,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:23,061 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:23,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 22:35:25,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:35:25,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:25,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:25,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:25,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078126878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:25,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:25,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:25,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56019116] [2021-10-13 22:35:25,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:25,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:25,972 INFO L87 Difference]: Start difference. First operand 4835 states and 13178 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:26,464 INFO L93 Difference]: Finished difference Result 9058 states and 23600 transitions. [2021-10-13 22:35:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:35:26,464 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:26,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:26,476 INFO L225 Difference]: With dead ends: 9058 [2021-10-13 22:35:26,477 INFO L226 Difference]: Without dead ends: 8906 [2021-10-13 22:35:26,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 455.1ms TimeCoverageRelationStatistics Valid=445, Invalid=1361, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:35:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2021-10-13 22:35:26,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 5150. [2021-10-13 22:35:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5150 states, 5149 states have (on average 2.7498543406486697) internal successors, (14159), 5149 states have internal predecessors, (14159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5150 states to 5150 states and 14159 transitions. [2021-10-13 22:35:26,579 INFO L78 Accepts]: Start accepts. Automaton has 5150 states and 14159 transitions. Word has length 62 [2021-10-13 22:35:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:26,579 INFO L470 AbstractCegarLoop]: Abstraction has 5150 states and 14159 transitions. [2021-10-13 22:35:26,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5150 states and 14159 transitions. [2021-10-13 22:35:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:26,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:26,584 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:26,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:26,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:26,803 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:26,804 INFO L82 PathProgramCache]: Analyzing trace with hash -624949668, now seen corresponding path program 37 times [2021-10-13 22:35:26,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:26,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401086086] [2021-10-13 22:35:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:26,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:26,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:26,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401086086] [2021-10-13 22:35:26,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401086086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:26,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904881111] [2021-10-13 22:35:26,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:26,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:26,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:26,879 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:26,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 22:35:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:29,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:29,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:29,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904881111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:29,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:29,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:29,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645382153] [2021-10-13 22:35:29,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:29,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:29,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:29,845 INFO L87 Difference]: Start difference. First operand 5150 states and 14159 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:30,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:30,605 INFO L93 Difference]: Finished difference Result 11273 states and 29578 transitions. [2021-10-13 22:35:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 22:35:30,605 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:30,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:30,620 INFO L225 Difference]: With dead ends: 11273 [2021-10-13 22:35:30,620 INFO L226 Difference]: Without dead ends: 10715 [2021-10-13 22:35:30,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 637.8ms TimeCoverageRelationStatistics Valid=795, Invalid=2745, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:35:30,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10715 states. [2021-10-13 22:35:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10715 to 4640. [2021-10-13 22:35:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4640 states, 4639 states have (on average 2.699719767191205) internal successors, (12524), 4639 states have internal predecessors, (12524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 12524 transitions. [2021-10-13 22:35:30,754 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 12524 transitions. Word has length 62 [2021-10-13 22:35:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:30,755 INFO L470 AbstractCegarLoop]: Abstraction has 4640 states and 12524 transitions. [2021-10-13 22:35:30,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 12524 transitions. [2021-10-13 22:35:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:30,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:30,759 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:30,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:30,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:30,966 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:30,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1742163916, now seen corresponding path program 38 times [2021-10-13 22:35:30,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:30,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28069294] [2021-10-13 22:35:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:30,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:31,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:31,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28069294] [2021-10-13 22:35:31,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28069294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:31,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267567716] [2021-10-13 22:35:31,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:31,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:31,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:31,097 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:31,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 22:35:33,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:33,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:33,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:33,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:34,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267567716] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:34,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:34,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:34,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877967964] [2021-10-13 22:35:34,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:34,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:34,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:34,125 INFO L87 Difference]: Start difference. First operand 4640 states and 12524 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:34,561 INFO L93 Difference]: Finished difference Result 9366 states and 24409 transitions. [2021-10-13 22:35:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:35:34,561 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:34,574 INFO L225 Difference]: With dead ends: 9366 [2021-10-13 22:35:34,574 INFO L226 Difference]: Without dead ends: 9214 [2021-10-13 22:35:34,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 400.8ms TimeCoverageRelationStatistics Valid=538, Invalid=1718, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:35:34,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2021-10-13 22:35:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 5210. [2021-10-13 22:35:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5210 states, 5209 states have (on average 2.7527356498368207) internal successors, (14339), 5209 states have internal predecessors, (14339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 14339 transitions. [2021-10-13 22:35:34,660 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 14339 transitions. Word has length 62 [2021-10-13 22:35:34,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:34,661 INFO L470 AbstractCegarLoop]: Abstraction has 5210 states and 14339 transitions. [2021-10-13 22:35:34,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 14339 transitions. [2021-10-13 22:35:34,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:34,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:34,666 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:34,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-13 22:35:34,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-13 22:35:34,875 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:34,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:34,875 INFO L82 PathProgramCache]: Analyzing trace with hash -577660080, now seen corresponding path program 39 times [2021-10-13 22:35:34,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:34,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964776279] [2021-10-13 22:35:34,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:34,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:35,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:35,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964776279] [2021-10-13 22:35:35,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964776279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:35,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152784041] [2021-10-13 22:35:35,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:35,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:35,031 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:35,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 22:35:37,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:35:37,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:37,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:37,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:37,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152784041] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:37,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:37,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:37,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845958170] [2021-10-13 22:35:37,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:37,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:37,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:37,875 INFO L87 Difference]: Start difference. First operand 5210 states and 14339 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:38,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:38,761 INFO L93 Difference]: Finished difference Result 12166 states and 31906 transitions. [2021-10-13 22:35:38,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-13 22:35:38,762 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:38,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:38,777 INFO L225 Difference]: With dead ends: 12166 [2021-10-13 22:35:38,777 INFO L226 Difference]: Without dead ends: 11341 [2021-10-13 22:35:38,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 735.2ms TimeCoverageRelationStatistics Valid=950, Invalid=3606, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 22:35:38,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2021-10-13 22:35:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 5007. [2021-10-13 22:35:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5007 states, 5006 states have (on average 2.730922892528965) internal successors, (13671), 5006 states have internal predecessors, (13671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5007 states to 5007 states and 13671 transitions. [2021-10-13 22:35:38,893 INFO L78 Accepts]: Start accepts. Automaton has 5007 states and 13671 transitions. Word has length 62 [2021-10-13 22:35:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:38,893 INFO L470 AbstractCegarLoop]: Abstraction has 5007 states and 13671 transitions. [2021-10-13 22:35:38,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5007 states and 13671 transitions. [2021-10-13 22:35:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:38,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:38,897 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:38,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-13 22:35:39,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-13 22:35:39,112 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:39,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1129493652, now seen corresponding path program 40 times [2021-10-13 22:35:39,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:39,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789894325] [2021-10-13 22:35:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:39,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:39,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:39,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789894325] [2021-10-13 22:35:39,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789894325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:39,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113513194] [2021-10-13 22:35:39,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:39,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:39,208 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:39,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 22:35:41,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:41,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:41,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:41,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:42,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113513194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:42,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:42,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:42,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54487181] [2021-10-13 22:35:42,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:42,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:42,169 INFO L87 Difference]: Start difference. First operand 5007 states and 13671 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:42,677 INFO L93 Difference]: Finished difference Result 8496 states and 21339 transitions. [2021-10-13 22:35:42,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:35:42,678 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:42,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:42,689 INFO L225 Difference]: With dead ends: 8496 [2021-10-13 22:35:42,689 INFO L226 Difference]: Without dead ends: 8344 [2021-10-13 22:35:42,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 445.9ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:35:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8344 states. [2021-10-13 22:35:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8344 to 5197. [2021-10-13 22:35:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 2.736913010007698) internal successors, (14221), 5196 states have internal predecessors, (14221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 14221 transitions. [2021-10-13 22:35:42,801 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 14221 transitions. Word has length 62 [2021-10-13 22:35:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:42,801 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 14221 transitions. [2021-10-13 22:35:42,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 14221 transitions. [2021-10-13 22:35:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:42,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:42,807 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:42,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:43,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:43,043 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:43,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:43,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1314616806, now seen corresponding path program 41 times [2021-10-13 22:35:43,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:43,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650111029] [2021-10-13 22:35:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:43,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:43,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:43,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650111029] [2021-10-13 22:35:43,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650111029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:43,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602580412] [2021-10-13 22:35:43,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:43,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:43,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:43,175 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:43,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 22:35:45,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:35:45,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:45,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:45,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:46,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602580412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:46,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:46,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:46,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919592195] [2021-10-13 22:35:46,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:46,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:46,205 INFO L87 Difference]: Start difference. First operand 5197 states and 14221 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:46,916 INFO L93 Difference]: Finished difference Result 9033 states and 23745 transitions. [2021-10-13 22:35:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 22:35:46,916 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:46,928 INFO L225 Difference]: With dead ends: 9033 [2021-10-13 22:35:46,928 INFO L226 Difference]: Without dead ends: 8881 [2021-10-13 22:35:46,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 616.4ms TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:35:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8881 states. [2021-10-13 22:35:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8881 to 5437. [2021-10-13 22:35:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 2.754047093451067) internal successors, (14971), 5436 states have internal predecessors, (14971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 14971 transitions. [2021-10-13 22:35:47,051 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 14971 transitions. Word has length 62 [2021-10-13 22:35:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:47,051 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 14971 transitions. [2021-10-13 22:35:47,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 14971 transitions. [2021-10-13 22:35:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:47,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:47,056 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:47,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:47,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-10-13 22:35:47,271 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash 660526494, now seen corresponding path program 42 times [2021-10-13 22:35:47,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:47,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897401271] [2021-10-13 22:35:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:47,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:47,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:47,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897401271] [2021-10-13 22:35:47,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897401271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:47,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673833623] [2021-10-13 22:35:47,388 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:47,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:47,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:47,389 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:47,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 22:35:50,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:35:50,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:50,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:50,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:50,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673833623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:50,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:50,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:50,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408581969] [2021-10-13 22:35:50,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:50,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:50,508 INFO L87 Difference]: Start difference. First operand 5437 states and 14971 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:51,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:51,635 INFO L93 Difference]: Finished difference Result 11233 states and 29715 transitions. [2021-10-13 22:35:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 22:35:51,636 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:51,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:51,651 INFO L225 Difference]: With dead ends: 11233 [2021-10-13 22:35:51,651 INFO L226 Difference]: Without dead ends: 10675 [2021-10-13 22:35:51,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 977.0ms TimeCoverageRelationStatistics Valid=972, Invalid=3318, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 22:35:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10675 states. [2021-10-13 22:35:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10675 to 5024. [2021-10-13 22:35:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5024 states, 5023 states have (on average 2.731634481385626) internal successors, (13721), 5023 states have internal predecessors, (13721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5024 states to 5024 states and 13721 transitions. [2021-10-13 22:35:51,731 INFO L78 Accepts]: Start accepts. Automaton has 5024 states and 13721 transitions. Word has length 62 [2021-10-13 22:35:51,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:51,731 INFO L470 AbstractCegarLoop]: Abstraction has 5024 states and 13721 transitions. [2021-10-13 22:35:51,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5024 states and 13721 transitions. [2021-10-13 22:35:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:51,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:51,736 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:51,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:51,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:51,946 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:51,947 INFO L82 PathProgramCache]: Analyzing trace with hash -251195738, now seen corresponding path program 43 times [2021-10-13 22:35:51,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:51,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992210532] [2021-10-13 22:35:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:51,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:52,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:52,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992210532] [2021-10-13 22:35:52,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992210532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:52,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638087709] [2021-10-13 22:35:52,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:52,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:52,118 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:52,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 22:35:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:54,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:54,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:55,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638087709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:55,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:55,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:55,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313173031] [2021-10-13 22:35:55,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:55,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:55,207 INFO L87 Difference]: Start difference. First operand 5024 states and 13721 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:55,888 INFO L93 Difference]: Finished difference Result 9141 states and 24052 transitions. [2021-10-13 22:35:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:35:55,888 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:35:55,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:55,899 INFO L225 Difference]: With dead ends: 9141 [2021-10-13 22:35:55,899 INFO L226 Difference]: Without dead ends: 8989 [2021-10-13 22:35:55,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 656.0ms TimeCoverageRelationStatistics Valid=548, Invalid=1804, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:35:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8989 states. [2021-10-13 22:35:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8989 to 5234. [2021-10-13 22:35:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 2.756736097840627) internal successors, (14426), 5233 states have internal predecessors, (14426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 14426 transitions. [2021-10-13 22:35:55,971 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 14426 transitions. Word has length 62 [2021-10-13 22:35:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:55,972 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 14426 transitions. [2021-10-13 22:35:55,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 14426 transitions. [2021-10-13 22:35:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:55,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:55,977 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:56,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:56,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:56,200 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:56,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1723947562, now seen corresponding path program 44 times [2021-10-13 22:35:56,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:56,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820321872] [2021-10-13 22:35:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:56,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:56,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:56,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820321872] [2021-10-13 22:35:56,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820321872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:56,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325767274] [2021-10-13 22:35:56,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:56,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:56,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:56,311 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:56,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 22:35:59,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:59,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:59,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:59,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:59,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325767274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:59,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:59,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:59,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700109892] [2021-10-13 22:35:59,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:59,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:59,527 INFO L87 Difference]: Start difference. First operand 5234 states and 14426 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:00,473 INFO L93 Difference]: Finished difference Result 11160 states and 29630 transitions. [2021-10-13 22:36:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 22:36:00,473 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:00,487 INFO L225 Difference]: With dead ends: 11160 [2021-10-13 22:36:00,488 INFO L226 Difference]: Without dead ends: 10602 [2021-10-13 22:36:00,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 834.9ms TimeCoverageRelationStatistics Valid=861, Invalid=3171, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 22:36:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10602 states. [2021-10-13 22:36:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10602 to 4829. [2021-10-13 22:36:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 4828 states have (on average 2.715824357912179) internal successors, (13112), 4828 states have internal predecessors, (13112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 13112 transitions. [2021-10-13 22:36:00,570 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 13112 transitions. Word has length 62 [2021-10-13 22:36:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:00,571 INFO L470 AbstractCegarLoop]: Abstraction has 4829 states and 13112 transitions. [2021-10-13 22:36:00,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 13112 transitions. [2021-10-13 22:36:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:00,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:00,601 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:00,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:00,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-10-13 22:36:00,801 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:00,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1388268712, now seen corresponding path program 45 times [2021-10-13 22:36:00,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:00,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765399007] [2021-10-13 22:36:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:00,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:00,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:00,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765399007] [2021-10-13 22:36:00,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765399007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:00,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375688235] [2021-10-13 22:36:00,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:00,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:00,925 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:00,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 22:36:03,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:36:03,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:03,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:36:03,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:04,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375688235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:04,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:04,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-10-13 22:36:04,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704892863] [2021-10-13 22:36:04,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:36:04,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:36:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:36:04,041 INFO L87 Difference]: Start difference. First operand 4829 states and 13112 transitions. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:04,618 INFO L93 Difference]: Finished difference Result 9053 states and 23594 transitions. [2021-10-13 22:36:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:36:04,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:04,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:04,630 INFO L225 Difference]: With dead ends: 9053 [2021-10-13 22:36:04,630 INFO L226 Difference]: Without dead ends: 8901 [2021-10-13 22:36:04,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 457.3ms TimeCoverageRelationStatistics Valid=428, Invalid=1552, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:36:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8901 states. [2021-10-13 22:36:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8901 to 5389. [2021-10-13 22:36:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 5388 states have (on average 2.766332590942836) internal successors, (14905), 5388 states have internal predecessors, (14905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 14905 transitions. [2021-10-13 22:36:04,861 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 14905 transitions. Word has length 62 [2021-10-13 22:36:04,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:04,861 INFO L470 AbstractCegarLoop]: Abstraction has 5389 states and 14905 transitions. [2021-10-13 22:36:04,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 14905 transitions. [2021-10-13 22:36:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:04,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:04,867 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:04,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:05,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:05,087 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:05,087 INFO L82 PathProgramCache]: Analyzing trace with hash 586874588, now seen corresponding path program 46 times [2021-10-13 22:36:05,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:05,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775355416] [2021-10-13 22:36:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:05,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:05,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:05,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775355416] [2021-10-13 22:36:05,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775355416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:05,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337572084] [2021-10-13 22:36:05,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:05,244 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:05,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:05,263 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:05,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 22:36:08,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:08,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:08,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:08,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:08,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337572084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:08,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:08,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:08,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287136061] [2021-10-13 22:36:08,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:08,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:08,546 INFO L87 Difference]: Start difference. First operand 5389 states and 14905 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:09,366 INFO L93 Difference]: Finished difference Result 11980 states and 31715 transitions. [2021-10-13 22:36:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 22:36:09,366 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:09,381 INFO L225 Difference]: With dead ends: 11980 [2021-10-13 22:36:09,381 INFO L226 Difference]: Without dead ends: 11374 [2021-10-13 22:36:09,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 731.6ms TimeCoverageRelationStatistics Valid=887, Invalid=3273, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 22:36:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11374 states. [2021-10-13 22:36:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11374 to 5306. [2021-10-13 22:36:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 5305 states have (on average 2.730631479736098) internal successors, (14486), 5305 states have internal predecessors, (14486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 14486 transitions. [2021-10-13 22:36:09,480 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 14486 transitions. Word has length 62 [2021-10-13 22:36:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:09,480 INFO L470 AbstractCegarLoop]: Abstraction has 5306 states and 14486 transitions. [2021-10-13 22:36:09,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 14486 transitions. [2021-10-13 22:36:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:09,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:09,485 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:09,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:09,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:09,693 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:09,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:09,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2000938976, now seen corresponding path program 47 times [2021-10-13 22:36:09,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:09,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289915517] [2021-10-13 22:36:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:09,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:09,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:09,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289915517] [2021-10-13 22:36:09,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289915517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:09,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500739096] [2021-10-13 22:36:09,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:09,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:09,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:09,849 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:09,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 22:36:12,706 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:36:12,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:12,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:12,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:13,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500739096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:13,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:13,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:13,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114721072] [2021-10-13 22:36:13,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:13,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:13,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:13,010 INFO L87 Difference]: Start difference. First operand 5306 states and 14486 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:13,443 INFO L93 Difference]: Finished difference Result 8974 states and 22719 transitions. [2021-10-13 22:36:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 22:36:13,444 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:13,455 INFO L225 Difference]: With dead ends: 8974 [2021-10-13 22:36:13,455 INFO L226 Difference]: Without dead ends: 8822 [2021-10-13 22:36:13,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 392.2ms TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:36:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2021-10-13 22:36:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 5506. [2021-10-13 22:36:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 5505 states have (on average 2.7396911898274294) internal successors, (15082), 5505 states have internal predecessors, (15082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 15082 transitions. [2021-10-13 22:36:13,566 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 15082 transitions. Word has length 62 [2021-10-13 22:36:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:13,566 INFO L470 AbstractCegarLoop]: Abstraction has 5506 states and 15082 transitions. [2021-10-13 22:36:13,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 15082 transitions. [2021-10-13 22:36:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:13,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:13,571 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:13,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:13,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:13,781 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:13,782 INFO L82 PathProgramCache]: Analyzing trace with hash -150082138, now seen corresponding path program 48 times [2021-10-13 22:36:13,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:13,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549416686] [2021-10-13 22:36:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:13,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:13,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:13,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549416686] [2021-10-13 22:36:13,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549416686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:13,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438305864] [2021-10-13 22:36:13,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:13,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:13,882 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:13,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-13 22:36:16,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:36:16,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:16,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:36:16,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:17,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438305864] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:17,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:17,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-10-13 22:36:17,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273688895] [2021-10-13 22:36:17,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:36:17,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:36:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:36:17,238 INFO L87 Difference]: Start difference. First operand 5506 states and 15082 transitions. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:18,016 INFO L93 Difference]: Finished difference Result 9945 states and 25997 transitions. [2021-10-13 22:36:18,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 22:36:18,016 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:18,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:18,031 INFO L225 Difference]: With dead ends: 9945 [2021-10-13 22:36:18,031 INFO L226 Difference]: Without dead ends: 9793 [2021-10-13 22:36:18,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 649.0ms TimeCoverageRelationStatistics Valid=552, Invalid=2100, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:36:18,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2021-10-13 22:36:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 5896. [2021-10-13 22:36:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5895 states have (on average 2.7721798134011872) internal successors, (16342), 5895 states have internal predecessors, (16342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 16342 transitions. [2021-10-13 22:36:18,168 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 16342 transitions. Word has length 62 [2021-10-13 22:36:18,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:18,168 INFO L470 AbstractCegarLoop]: Abstraction has 5896 states and 16342 transitions. [2021-10-13 22:36:18,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:18,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 16342 transitions. [2021-10-13 22:36:18,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:18,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:18,173 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:18,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:18,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-13 22:36:18,386 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:18,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1825061162, now seen corresponding path program 49 times [2021-10-13 22:36:18,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:18,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742767813] [2021-10-13 22:36:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:18,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:18,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:18,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742767813] [2021-10-13 22:36:18,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742767813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:18,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517107310] [2021-10-13 22:36:18,506 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:18,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:18,507 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:18,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-13 22:36:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:21,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:21,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:21,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517107310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:21,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:21,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:21,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108556869] [2021-10-13 22:36:21,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:21,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:21,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:21,772 INFO L87 Difference]: Start difference. First operand 5896 states and 16342 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:22,889 INFO L93 Difference]: Finished difference Result 12473 states and 33287 transitions. [2021-10-13 22:36:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-13 22:36:22,889 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:22,905 INFO L225 Difference]: With dead ends: 12473 [2021-10-13 22:36:22,905 INFO L226 Difference]: Without dead ends: 11915 [2021-10-13 22:36:22,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 984.5ms TimeCoverageRelationStatistics Valid=1206, Invalid=4344, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 22:36:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11915 states. [2021-10-13 22:36:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11915 to 5436. [2021-10-13 22:36:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5436 states, 5435 states have (on average 2.742778288868445) internal successors, (14907), 5435 states have internal predecessors, (14907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5436 states to 5436 states and 14907 transitions. [2021-10-13 22:36:22,996 INFO L78 Accepts]: Start accepts. Automaton has 5436 states and 14907 transitions. Word has length 62 [2021-10-13 22:36:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:22,996 INFO L470 AbstractCegarLoop]: Abstraction has 5436 states and 14907 transitions. [2021-10-13 22:36:22,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5436 states and 14907 transitions. [2021-10-13 22:36:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:23,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:23,000 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:23,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:23,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:23,208 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash -104744502, now seen corresponding path program 50 times [2021-10-13 22:36:23,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:23,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034344889] [2021-10-13 22:36:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:23,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:23,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:23,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034344889] [2021-10-13 22:36:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034344889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:23,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118854712] [2021-10-13 22:36:23,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:23,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:23,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:23,317 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:23,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-13 22:36:26,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:26,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:26,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:26,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:26,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118854712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:26,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:26,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:26,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732506030] [2021-10-13 22:36:26,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:26,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:26,687 INFO L87 Difference]: Start difference. First operand 5436 states and 14907 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:27,439 INFO L93 Difference]: Finished difference Result 10430 states and 27509 transitions. [2021-10-13 22:36:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 22:36:27,439 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:27,453 INFO L225 Difference]: With dead ends: 10430 [2021-10-13 22:36:27,453 INFO L226 Difference]: Without dead ends: 10278 [2021-10-13 22:36:27,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 671.4ms TimeCoverageRelationStatistics Valid=782, Invalid=2524, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:36:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10278 states. [2021-10-13 22:36:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10278 to 5606. [2021-10-13 22:36:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 5605 states have (on average 2.7621766280107045) internal successors, (15482), 5605 states have internal predecessors, (15482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 15482 transitions. [2021-10-13 22:36:27,544 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 15482 transitions. Word has length 62 [2021-10-13 22:36:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:27,544 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 15482 transitions. [2021-10-13 22:36:27,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 15482 transitions. [2021-10-13 22:36:27,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:27,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:27,549 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:27,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:27,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:27,768 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:27,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1870398798, now seen corresponding path program 51 times [2021-10-13 22:36:27,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:27,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824578462] [2021-10-13 22:36:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:27,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:27,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:27,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824578462] [2021-10-13 22:36:27,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824578462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:27,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295670465] [2021-10-13 22:36:27,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:27,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:27,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:27,857 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:27,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-13 22:36:30,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:36:30,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:30,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:30,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:31,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295670465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:31,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:31,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:31,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66360745] [2021-10-13 22:36:31,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:31,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:31,373 INFO L87 Difference]: Start difference. First operand 5606 states and 15482 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:32,502 INFO L93 Difference]: Finished difference Result 12640 states and 33584 transitions. [2021-10-13 22:36:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-13 22:36:32,503 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:32,521 INFO L225 Difference]: With dead ends: 12640 [2021-10-13 22:36:32,521 INFO L226 Difference]: Without dead ends: 12082 [2021-10-13 22:36:32,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1023.8ms TimeCoverageRelationStatistics Valid=1196, Invalid=4206, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 22:36:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12082 states. [2021-10-13 22:36:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12082 to 5506. [2021-10-13 22:36:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 5505 states have (on average 2.7440508628519527) internal successors, (15106), 5505 states have internal predecessors, (15106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 15106 transitions. [2021-10-13 22:36:32,622 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 15106 transitions. Word has length 62 [2021-10-13 22:36:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:32,622 INFO L470 AbstractCegarLoop]: Abstraction has 5506 states and 15106 transitions. [2021-10-13 22:36:32,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 15106 transitions. [2021-10-13 22:36:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:32,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:32,627 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:32,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:32,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2021-10-13 22:36:32,851 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:32,851 INFO L82 PathProgramCache]: Analyzing trace with hash -855103656, now seen corresponding path program 52 times [2021-10-13 22:36:32,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:32,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193248185] [2021-10-13 22:36:32,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:32,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:32,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:32,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193248185] [2021-10-13 22:36:32,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193248185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:32,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801603873] [2021-10-13 22:36:32,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:32,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:32,955 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:32,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-13 22:36:36,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:36,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:36,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:36,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:36,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801603873] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:36,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:36,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:36:36,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79783799] [2021-10-13 22:36:36,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:36:36,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:36:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:36:36,513 INFO L87 Difference]: Start difference. First operand 5506 states and 15106 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:37,361 INFO L93 Difference]: Finished difference Result 11029 states and 29561 transitions. [2021-10-13 22:36:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 22:36:37,361 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:37,376 INFO L225 Difference]: With dead ends: 11029 [2021-10-13 22:36:37,376 INFO L226 Difference]: Without dead ends: 10647 [2021-10-13 22:36:37,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 862.4ms TimeCoverageRelationStatistics Valid=894, Invalid=2766, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:36:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10647 states. [2021-10-13 22:36:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10647 to 5677. [2021-10-13 22:36:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 2.7739605355884427) internal successors, (15745), 5676 states have internal predecessors, (15745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 15745 transitions. [2021-10-13 22:36:37,476 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 15745 transitions. Word has length 62 [2021-10-13 22:36:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:37,476 INFO L470 AbstractCegarLoop]: Abstraction has 5677 states and 15745 transitions. [2021-10-13 22:36:37,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 15745 transitions. [2021-10-13 22:36:37,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:37,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:37,482 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:37,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:37,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:37,685 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:37,685 INFO L82 PathProgramCache]: Analyzing trace with hash 877970832, now seen corresponding path program 22 times [2021-10-13 22:36:37,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:37,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820641505] [2021-10-13 22:36:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:37,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:37,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:37,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820641505] [2021-10-13 22:36:37,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820641505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:37,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752344188] [2021-10-13 22:36:37,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:37,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:37,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:37,794 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:37,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-13 22:36:41,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:41,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:41,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:41,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:41,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752344188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:41,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:41,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:41,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150419497] [2021-10-13 22:36:41,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:41,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:41,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:41,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:41,379 INFO L87 Difference]: Start difference. First operand 5677 states and 15745 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:41,834 INFO L93 Difference]: Finished difference Result 8736 states and 22444 transitions. [2021-10-13 22:36:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:36:41,835 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:41,891 INFO L225 Difference]: With dead ends: 8736 [2021-10-13 22:36:41,892 INFO L226 Difference]: Without dead ends: 8344 [2021-10-13 22:36:41,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 443.9ms TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:36:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8344 states. [2021-10-13 22:36:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8344 to 5690. [2021-10-13 22:36:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5689 states have (on average 2.7778168395148533) internal successors, (15803), 5689 states have internal predecessors, (15803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 15803 transitions. [2021-10-13 22:36:41,956 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 15803 transitions. Word has length 62 [2021-10-13 22:36:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:41,956 INFO L470 AbstractCegarLoop]: Abstraction has 5690 states and 15803 transitions. [2021-10-13 22:36:41,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 15803 transitions. [2021-10-13 22:36:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:41,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:41,961 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:41,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:42,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:42,172 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash 61284704, now seen corresponding path program 23 times [2021-10-13 22:36:42,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:42,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691663900] [2021-10-13 22:36:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:42,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:42,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:42,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691663900] [2021-10-13 22:36:42,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691663900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:42,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776568329] [2021-10-13 22:36:42,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:42,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:42,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:42,276 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:42,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-13 22:36:45,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:36:45,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:45,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:45,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:45,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776568329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:45,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:45,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:45,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745915325] [2021-10-13 22:36:45,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:45,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:45,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:45,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:45,805 INFO L87 Difference]: Start difference. First operand 5690 states and 15803 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:46,349 INFO L93 Difference]: Finished difference Result 8745 states and 22512 transitions. [2021-10-13 22:36:46,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:36:46,349 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:46,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:46,362 INFO L225 Difference]: With dead ends: 8745 [2021-10-13 22:36:46,362 INFO L226 Difference]: Without dead ends: 8353 [2021-10-13 22:36:46,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 478.8ms TimeCoverageRelationStatistics Valid=525, Invalid=2025, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:36:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8353 states. [2021-10-13 22:36:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8353 to 5685. [2021-10-13 22:36:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5684 states have (on average 2.7820197044334973) internal successors, (15813), 5684 states have internal predecessors, (15813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 15813 transitions. [2021-10-13 22:36:46,435 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 15813 transitions. Word has length 62 [2021-10-13 22:36:46,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:46,435 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 15813 transitions. [2021-10-13 22:36:46,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 15813 transitions. [2021-10-13 22:36:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:46,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:46,440 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:46,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:46,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:46,649 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:46,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:46,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1633770608, now seen corresponding path program 24 times [2021-10-13 22:36:46,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:46,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717866238] [2021-10-13 22:36:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:46,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:46,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:46,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717866238] [2021-10-13 22:36:46,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717866238] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:46,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442431746] [2021-10-13 22:36:46,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:46,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:46,778 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:46,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-13 22:36:49,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:36:49,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:49,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:49,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:50,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442431746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:50,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:50,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:50,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379222409] [2021-10-13 22:36:50,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:50,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:50,354 INFO L87 Difference]: Start difference. First operand 5685 states and 15813 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:50,995 INFO L93 Difference]: Finished difference Result 8880 states and 23095 transitions. [2021-10-13 22:36:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 22:36:50,995 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:50,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:51,007 INFO L225 Difference]: With dead ends: 8880 [2021-10-13 22:36:51,007 INFO L226 Difference]: Without dead ends: 8488 [2021-10-13 22:36:51,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 582.0ms TimeCoverageRelationStatistics Valid=669, Invalid=2523, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:36:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2021-10-13 22:36:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 5552. [2021-10-13 22:36:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5552 states, 5551 states have (on average 2.7868852459016393) internal successors, (15470), 5551 states have internal predecessors, (15470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 15470 transitions. [2021-10-13 22:36:51,085 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 15470 transitions. Word has length 62 [2021-10-13 22:36:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:51,085 INFO L470 AbstractCegarLoop]: Abstraction has 5552 states and 15470 transitions. [2021-10-13 22:36:51,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 15470 transitions. [2021-10-13 22:36:51,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:51,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:51,090 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:51,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:51,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-10-13 22:36:51,294 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:51,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:51,294 INFO L82 PathProgramCache]: Analyzing trace with hash -299203744, now seen corresponding path program 25 times [2021-10-13 22:36:51,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:51,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015481978] [2021-10-13 22:36:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:51,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:51,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:51,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015481978] [2021-10-13 22:36:51,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015481978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:51,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389742908] [2021-10-13 22:36:51,398 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:51,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:51,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:51,412 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:51,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-13 22:36:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:54,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:54,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:55,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389742908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:55,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:55,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:55,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010580436] [2021-10-13 22:36:55,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:55,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:55,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:55,159 INFO L87 Difference]: Start difference. First operand 5552 states and 15470 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:55,722 INFO L93 Difference]: Finished difference Result 9138 states and 24045 transitions. [2021-10-13 22:36:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 22:36:55,722 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:36:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:55,734 INFO L225 Difference]: With dead ends: 9138 [2021-10-13 22:36:55,734 INFO L226 Difference]: Without dead ends: 8658 [2021-10-13 22:36:55,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 517.1ms TimeCoverageRelationStatistics Valid=759, Invalid=2781, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:36:55,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8658 states. [2021-10-13 22:36:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8658 to 5750. [2021-10-13 22:36:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5749 states have (on average 2.794225082623065) internal successors, (16064), 5749 states have internal predecessors, (16064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 16064 transitions. [2021-10-13 22:36:55,823 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 16064 transitions. Word has length 62 [2021-10-13 22:36:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:55,823 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 16064 transitions. [2021-10-13 22:36:55,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 16064 transitions. [2021-10-13 22:36:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:36:55,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:55,828 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:55,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:56,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-10-13 22:36:56,051 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:56,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1675939556, now seen corresponding path program 26 times [2021-10-13 22:36:56,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:56,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136998251] [2021-10-13 22:36:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:56,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:56,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:56,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136998251] [2021-10-13 22:36:56,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136998251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:56,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083707349] [2021-10-13 22:36:56,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:56,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:56,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:56,195 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:56,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-13 22:36:59,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:59,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:59,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:36:59,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:59,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083707349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:59,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:59,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:36:59,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036412076] [2021-10-13 22:36:59,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:59,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:59,919 INFO L87 Difference]: Start difference. First operand 5750 states and 16064 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:00,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:00,912 INFO L93 Difference]: Finished difference Result 11338 states and 30155 transitions. [2021-10-13 22:37:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-13 22:37:00,913 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:37:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:00,927 INFO L225 Difference]: With dead ends: 11338 [2021-10-13 22:37:00,927 INFO L226 Difference]: Without dead ends: 10398 [2021-10-13 22:37:00,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 906.3ms TimeCoverageRelationStatistics Valid=1132, Invalid=4270, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 22:37:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10398 states. [2021-10-13 22:37:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10398 to 5899. [2021-10-13 22:37:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5899 states, 5898 states have (on average 2.7948457104103084) internal successors, (16484), 5898 states have internal predecessors, (16484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5899 states to 5899 states and 16484 transitions. [2021-10-13 22:37:01,022 INFO L78 Accepts]: Start accepts. Automaton has 5899 states and 16484 transitions. Word has length 62 [2021-10-13 22:37:01,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:01,022 INFO L470 AbstractCegarLoop]: Abstraction has 5899 states and 16484 transitions. [2021-10-13 22:37:01,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5899 states and 16484 transitions. [2021-10-13 22:37:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:37:01,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:01,027 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:01,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:01,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-13 22:37:01,251 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:01,252 INFO L82 PathProgramCache]: Analyzing trace with hash 159291980, now seen corresponding path program 53 times [2021-10-13 22:37:01,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:01,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712504761] [2021-10-13 22:37:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:01,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:01,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:01,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712504761] [2021-10-13 22:37:01,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712504761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:01,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781931343] [2021-10-13 22:37:01,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:01,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:01,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:01,329 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:01,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-13 22:37:04,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:37:04,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:04,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:37:04,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:05,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781931343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:05,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:05,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:37:05,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393806469] [2021-10-13 22:37:05,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:37:05,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:37:05,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:37:05,099 INFO L87 Difference]: Start difference. First operand 5899 states and 16484 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:06,171 INFO L93 Difference]: Finished difference Result 11296 states and 30641 transitions. [2021-10-13 22:37:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 22:37:06,171 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:37:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:06,185 INFO L225 Difference]: With dead ends: 11296 [2021-10-13 22:37:06,185 INFO L226 Difference]: Without dead ends: 10914 [2021-10-13 22:37:06,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 925.6ms TimeCoverageRelationStatistics Valid=772, Invalid=2420, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:37:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10914 states. [2021-10-13 22:37:06,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10914 to 6079. [2021-10-13 22:37:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6079 states, 6078 states have (on average 2.8142481079302404) internal successors, (17105), 6078 states have internal predecessors, (17105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6079 states to 6079 states and 17105 transitions. [2021-10-13 22:37:06,275 INFO L78 Accepts]: Start accepts. Automaton has 6079 states and 17105 transitions. Word has length 62 [2021-10-13 22:37:06,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:06,276 INFO L470 AbstractCegarLoop]: Abstraction has 6079 states and 17105 transitions. [2021-10-13 22:37:06,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:06,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 17105 transitions. [2021-10-13 22:37:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:37:06,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:06,281 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:06,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:06,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-10-13 22:37:06,503 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash -500125762, now seen corresponding path program 54 times [2021-10-13 22:37:06,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:06,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115553758] [2021-10-13 22:37:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:06,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:06,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:06,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115553758] [2021-10-13 22:37:06,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115553758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:06,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408137497] [2021-10-13 22:37:06,644 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:06,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:06,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:06,645 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:06,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-13 22:37:09,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:37:09,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:09,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:37:09,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:10,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408137497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:10,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:10,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:37:10,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945852251] [2021-10-13 22:37:10,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:37:10,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:10,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:37:10,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:37:10,328 INFO L87 Difference]: Start difference. First operand 6079 states and 17105 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:10,653 INFO L93 Difference]: Finished difference Result 9100 states and 23712 transitions. [2021-10-13 22:37:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:37:10,653 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:37:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:10,664 INFO L225 Difference]: With dead ends: 9100 [2021-10-13 22:37:10,665 INFO L226 Difference]: Without dead ends: 8948 [2021-10-13 22:37:10,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 332.0ms TimeCoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:37:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8948 states. [2021-10-13 22:37:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8948 to 6097. [2021-10-13 22:37:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6097 states, 6096 states have (on average 2.817749343832021) internal successors, (17177), 6096 states have internal predecessors, (17177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6097 states to 6097 states and 17177 transitions. [2021-10-13 22:37:10,748 INFO L78 Accepts]: Start accepts. Automaton has 6097 states and 17177 transitions. Word has length 62 [2021-10-13 22:37:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:10,748 INFO L470 AbstractCegarLoop]: Abstraction has 6097 states and 17177 transitions. [2021-10-13 22:37:10,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 6097 states and 17177 transitions. [2021-10-13 22:37:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:37:10,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:10,753 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:10,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:10,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:10,970 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:10,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:10,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2099786222, now seen corresponding path program 55 times [2021-10-13 22:37:10,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:10,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844284438] [2021-10-13 22:37:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:10,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:11,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:11,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844284438] [2021-10-13 22:37:11,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844284438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:11,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650997543] [2021-10-13 22:37:11,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:11,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:11,081 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:11,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-13 22:37:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:14,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:37:14,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:15,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650997543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:15,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:15,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:37:15,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668921147] [2021-10-13 22:37:15,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:37:15,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:15,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:37:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:37:15,046 INFO L87 Difference]: Start difference. First operand 6097 states and 17177 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:15,635 INFO L93 Difference]: Finished difference Result 9285 states and 24477 transitions. [2021-10-13 22:37:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 22:37:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:37:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:15,648 INFO L225 Difference]: With dead ends: 9285 [2021-10-13 22:37:15,648 INFO L226 Difference]: Without dead ends: 9133 [2021-10-13 22:37:15,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 566.7ms TimeCoverageRelationStatistics Valid=532, Invalid=1918, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:37:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9133 states. [2021-10-13 22:37:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9133 to 6009. [2021-10-13 22:37:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 2.8219041278295607) internal successors, (16954), 6008 states have internal predecessors, (16954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 16954 transitions. [2021-10-13 22:37:15,729 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 16954 transitions. Word has length 62 [2021-10-13 22:37:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:15,729 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 16954 transitions. [2021-10-13 22:37:15,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 16954 transitions. [2021-10-13 22:37:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:37:15,734 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:15,734 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:15,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:15,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:15,937 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:15,937 INFO L82 PathProgramCache]: Analyzing trace with hash -860614210, now seen corresponding path program 56 times [2021-10-13 22:37:15,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:15,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459943413] [2021-10-13 22:37:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:15,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:16,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:16,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459943413] [2021-10-13 22:37:16,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459943413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:16,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152685743] [2021-10-13 22:37:16,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:16,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:16,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:16,041 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:16,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-13 22:37:19,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:19,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:19,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:37:19,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:19,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152685743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:19,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:19,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:37:19,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332605168] [2021-10-13 22:37:19,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:37:19,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:37:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:37:19,810 INFO L87 Difference]: Start difference. First operand 6009 states and 16954 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:20,351 INFO L93 Difference]: Finished difference Result 9575 states and 25712 transitions. [2021-10-13 22:37:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 22:37:20,351 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:37:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:20,363 INFO L225 Difference]: With dead ends: 9575 [2021-10-13 22:37:20,364 INFO L226 Difference]: Without dead ends: 9423 [2021-10-13 22:37:20,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 524.7ms TimeCoverageRelationStatistics Valid=640, Invalid=2222, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:37:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9423 states. [2021-10-13 22:37:20,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9423 to 6237. [2021-10-13 22:37:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6237 states, 6236 states have (on average 2.8250481077613854) internal successors, (17617), 6236 states have internal predecessors, (17617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6237 states to 6237 states and 17617 transitions. [2021-10-13 22:37:20,451 INFO L78 Accepts]: Start accepts. Automaton has 6237 states and 17617 transitions. Word has length 62 [2021-10-13 22:37:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:20,451 INFO L470 AbstractCegarLoop]: Abstraction has 6237 states and 17617 transitions. [2021-10-13 22:37:20,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6237 states and 17617 transitions. [2021-10-13 22:37:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:37:20,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:20,457 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:20,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:20,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:20,668 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:20,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1114529090, now seen corresponding path program 57 times [2021-10-13 22:37:20,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:20,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889281073] [2021-10-13 22:37:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:20,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:20,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:20,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889281073] [2021-10-13 22:37:20,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889281073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:20,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973348619] [2021-10-13 22:37:20,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:20,785 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:20,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:20,786 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:20,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-13 22:37:24,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:37:24,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:24,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:37:24,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:24,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973348619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:24,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:24,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:37:24,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254354793] [2021-10-13 22:37:24,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:37:24,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:37:24,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:37:24,681 INFO L87 Difference]: Start difference. First operand 6237 states and 17617 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:25,664 INFO L93 Difference]: Finished difference Result 11789 states and 31545 transitions. [2021-10-13 22:37:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-13 22:37:25,664 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 22:37:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:25,679 INFO L225 Difference]: With dead ends: 11789 [2021-10-13 22:37:25,679 INFO L226 Difference]: Without dead ends: 11231 [2021-10-13 22:37:25,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 892.0ms TimeCoverageRelationStatistics Valid=984, Invalid=3708, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 22:37:25,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11231 states. [2021-10-13 22:37:25,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11231 to 5794. [2021-10-13 22:37:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5793 states have (on average 2.7983773519765234) internal successors, (16211), 5793 states have internal predecessors, (16211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 16211 transitions. [2021-10-13 22:37:25,772 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 16211 transitions. Word has length 62 [2021-10-13 22:37:25,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:25,772 INFO L470 AbstractCegarLoop]: Abstraction has 5794 states and 16211 transitions. [2021-10-13 22:37:25,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 16211 transitions. [2021-10-13 22:37:25,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:25,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:25,777 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:25,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:25,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:25,991 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:25,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1480625243, now seen corresponding path program 58 times [2021-10-13 22:37:25,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:25,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755140889] [2021-10-13 22:37:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:25,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:26,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:26,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755140889] [2021-10-13 22:37:26,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755140889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:26,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497413514] [2021-10-13 22:37:26,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:26,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:26,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:26,117 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:26,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-13 22:37:29,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:29,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:29,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:29,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:30,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497413514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:30,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:30,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:30,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953546688] [2021-10-13 22:37:30,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:30,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:30,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:30,213 INFO L87 Difference]: Start difference. First operand 5794 states and 16211 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:30,578 INFO L93 Difference]: Finished difference Result 8197 states and 21451 transitions. [2021-10-13 22:37:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:37:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:30,627 INFO L225 Difference]: With dead ends: 8197 [2021-10-13 22:37:30,627 INFO L226 Difference]: Without dead ends: 8045 [2021-10-13 22:37:30,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 387.1ms TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:37:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2021-10-13 22:37:30,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 5984. [2021-10-13 22:37:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5983 states have (on average 2.779374895537356) internal successors, (16629), 5983 states have internal predecessors, (16629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 16629 transitions. [2021-10-13 22:37:30,697 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 16629 transitions. Word has length 67 [2021-10-13 22:37:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:30,697 INFO L470 AbstractCegarLoop]: Abstraction has 5984 states and 16629 transitions. [2021-10-13 22:37:30,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 16629 transitions. [2021-10-13 22:37:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:30,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:30,703 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:30,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:30,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:30,916 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:30,916 INFO L82 PathProgramCache]: Analyzing trace with hash 44920881, now seen corresponding path program 59 times [2021-10-13 22:37:30,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:30,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980665141] [2021-10-13 22:37:30,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:30,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:31,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:31,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980665141] [2021-10-13 22:37:31,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980665141] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:31,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774875884] [2021-10-13 22:37:31,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:31,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:31,039 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:31,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-13 22:37:34,764 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:37:34,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:34,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:34,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:35,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774875884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:35,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:35,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:35,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398679002] [2021-10-13 22:37:35,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:35,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:35,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:35,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:35,304 INFO L87 Difference]: Start difference. First operand 5984 states and 16629 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:35,710 INFO L93 Difference]: Finished difference Result 8247 states and 21561 transitions. [2021-10-13 22:37:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:37:35,710 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:35,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:35,722 INFO L225 Difference]: With dead ends: 8247 [2021-10-13 22:37:35,722 INFO L226 Difference]: Without dead ends: 8095 [2021-10-13 22:37:35,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 428.4ms TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:37:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2021-10-13 22:37:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6009. [2021-10-13 22:37:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 2.7769640479360853) internal successors, (16684), 6008 states have internal predecessors, (16684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 16684 transitions. [2021-10-13 22:37:35,803 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 16684 transitions. Word has length 67 [2021-10-13 22:37:35,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:35,804 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 16684 transitions. [2021-10-13 22:37:35,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 16684 transitions. [2021-10-13 22:37:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:35,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:35,809 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:35,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:36,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-10-13 22:37:36,009 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash -330779613, now seen corresponding path program 60 times [2021-10-13 22:37:36,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:36,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539790663] [2021-10-13 22:37:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:36,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:36,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:36,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539790663] [2021-10-13 22:37:36,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539790663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:36,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050240372] [2021-10-13 22:37:36,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:36,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:36,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:36,145 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:36,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-13 22:37:39,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:37:39,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:39,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:39,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:40,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050240372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:40,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:40,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:40,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180339221] [2021-10-13 22:37:40,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:40,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:40,406 INFO L87 Difference]: Start difference. First operand 6009 states and 16684 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:40,830 INFO L93 Difference]: Finished difference Result 8346 states and 21766 transitions. [2021-10-13 22:37:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:37:40,831 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:40,841 INFO L225 Difference]: With dead ends: 8346 [2021-10-13 22:37:40,841 INFO L226 Difference]: Without dead ends: 8194 [2021-10-13 22:37:40,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 458.8ms TimeCoverageRelationStatistics Valid=430, Invalid=1130, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:37:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8194 states. [2021-10-13 22:37:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8194 to 6009. [2021-10-13 22:37:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 2.7769640479360853) internal successors, (16684), 6008 states have internal predecessors, (16684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 16684 transitions. [2021-10-13 22:37:40,917 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 16684 transitions. Word has length 67 [2021-10-13 22:37:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:40,917 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 16684 transitions. [2021-10-13 22:37:40,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 16684 transitions. [2021-10-13 22:37:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:40,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:40,922 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:40,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:41,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-10-13 22:37:41,136 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:41,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:41,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1820496361, now seen corresponding path program 61 times [2021-10-13 22:37:41,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:41,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104897618] [2021-10-13 22:37:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:41,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:41,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:41,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104897618] [2021-10-13 22:37:41,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104897618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:41,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863809113] [2021-10-13 22:37:41,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:41,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:41,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:41,263 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:41,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-13 22:37:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:45,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:45,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:45,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863809113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:45,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:45,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:45,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664370882] [2021-10-13 22:37:45,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:45,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:45,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:45,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:45,554 INFO L87 Difference]: Start difference. First operand 6009 states and 16684 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:45,906 INFO L93 Difference]: Finished difference Result 8291 states and 21661 transitions. [2021-10-13 22:37:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:37:45,907 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:45,916 INFO L225 Difference]: With dead ends: 8291 [2021-10-13 22:37:45,917 INFO L226 Difference]: Without dead ends: 8139 [2021-10-13 22:37:45,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 407.8ms TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:37:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8139 states. [2021-10-13 22:37:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8139 to 6009. [2021-10-13 22:37:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 2.7769640479360853) internal successors, (16684), 6008 states have internal predecessors, (16684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 16684 transitions. [2021-10-13 22:37:45,994 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 16684 transitions. Word has length 67 [2021-10-13 22:37:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:45,994 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 16684 transitions. [2021-10-13 22:37:45,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 16684 transitions. [2021-10-13 22:37:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:46,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:46,000 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:46,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:46,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:46,207 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:46,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1745054501, now seen corresponding path program 62 times [2021-10-13 22:37:46,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:46,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161688647] [2021-10-13 22:37:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:46,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:46,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:46,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161688647] [2021-10-13 22:37:46,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161688647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:46,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385019012] [2021-10-13 22:37:46,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:46,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:46,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:46,353 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:46,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-13 22:37:50,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:50,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:50,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:50,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:50,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385019012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:50,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:50,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:50,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680971736] [2021-10-13 22:37:50,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:50,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:50,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:50,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:50,642 INFO L87 Difference]: Start difference. First operand 6009 states and 16684 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:51,026 INFO L93 Difference]: Finished difference Result 8341 states and 21739 transitions. [2021-10-13 22:37:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:37:51,027 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:51,037 INFO L225 Difference]: With dead ends: 8341 [2021-10-13 22:37:51,037 INFO L226 Difference]: Without dead ends: 8189 [2021-10-13 22:37:51,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 404.1ms TimeCoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:37:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8189 states. [2021-10-13 22:37:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8189 to 6159. [2021-10-13 22:37:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6159 states, 6158 states have (on average 2.762910035725885) internal successors, (17014), 6158 states have internal predecessors, (17014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6159 states to 6159 states and 17014 transitions. [2021-10-13 22:37:51,119 INFO L78 Accepts]: Start accepts. Automaton has 6159 states and 17014 transitions. Word has length 67 [2021-10-13 22:37:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:51,119 INFO L470 AbstractCegarLoop]: Abstraction has 6159 states and 17014 transitions. [2021-10-13 22:37:51,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6159 states and 17014 transitions. [2021-10-13 22:37:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:51,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:51,124 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:51,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:51,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:51,339 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1369354007, now seen corresponding path program 63 times [2021-10-13 22:37:51,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:51,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081171690] [2021-10-13 22:37:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:51,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:51,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:51,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081171690] [2021-10-13 22:37:51,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081171690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:51,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356360172] [2021-10-13 22:37:51,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:51,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:51,448 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:51,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-13 22:37:55,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:37:55,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:55,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:55,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:55,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356360172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:55,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:55,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:55,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033640368] [2021-10-13 22:37:55,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:55,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:55,784 INFO L87 Difference]: Start difference. First operand 6159 states and 17014 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:56,201 INFO L93 Difference]: Finished difference Result 8606 states and 22274 transitions. [2021-10-13 22:37:56,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:37:56,201 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:56,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:56,212 INFO L225 Difference]: With dead ends: 8606 [2021-10-13 22:37:56,212 INFO L226 Difference]: Without dead ends: 8454 [2021-10-13 22:37:56,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 430.4ms TimeCoverageRelationStatistics Valid=501, Invalid=1391, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:37:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8454 states. [2021-10-13 22:37:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8454 to 6209. [2021-10-13 22:37:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6209 states, 6208 states have (on average 2.758376288659794) internal successors, (17124), 6208 states have internal predecessors, (17124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 17124 transitions. [2021-10-13 22:37:56,332 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 17124 transitions. Word has length 67 [2021-10-13 22:37:56,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:56,332 INFO L470 AbstractCegarLoop]: Abstraction has 6209 states and 17124 transitions. [2021-10-13 22:37:56,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:56,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 17124 transitions. [2021-10-13 22:37:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:56,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:56,338 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:56,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:56,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:56,550 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:56,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1780185629, now seen corresponding path program 27 times [2021-10-13 22:37:56,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:56,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393636815] [2021-10-13 22:37:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:56,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:56,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:56,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393636815] [2021-10-13 22:37:56,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393636815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:56,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425500598] [2021-10-13 22:37:56,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:56,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:56,680 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:56,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-13 22:38:00,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:38:00,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:00,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:00,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:01,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425500598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:01,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:01,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-10-13 22:38:01,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747895295] [2021-10-13 22:38:01,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:01,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:01,011 INFO L87 Difference]: Start difference. First operand 6209 states and 17124 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:01,413 INFO L93 Difference]: Finished difference Result 8306 states and 21694 transitions. [2021-10-13 22:38:01,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:38:01,414 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:01,424 INFO L225 Difference]: With dead ends: 8306 [2021-10-13 22:38:01,424 INFO L226 Difference]: Without dead ends: 8154 [2021-10-13 22:38:01,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 434.1ms TimeCoverageRelationStatistics Valid=448, Invalid=1192, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:38:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8154 states. [2021-10-13 22:38:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8154 to 6184. [2021-10-13 22:38:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 2.760633996441857) internal successors, (17069), 6183 states have internal predecessors, (17069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 17069 transitions. [2021-10-13 22:38:01,499 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 17069 transitions. Word has length 67 [2021-10-13 22:38:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:01,500 INFO L470 AbstractCegarLoop]: Abstraction has 6184 states and 17069 transitions. [2021-10-13 22:38:01,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 17069 transitions. [2021-10-13 22:38:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:01,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:01,505 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:01,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:01,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:01,736 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:01,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1126444287, now seen corresponding path program 64 times [2021-10-13 22:38:01,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:01,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136992822] [2021-10-13 22:38:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:01,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:01,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:01,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136992822] [2021-10-13 22:38:01,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136992822] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:01,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274086901] [2021-10-13 22:38:01,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:01,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:01,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:01,863 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:01,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-13 22:38:05,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:05,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:05,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:05,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:06,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274086901] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:06,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:06,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:06,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656686830] [2021-10-13 22:38:06,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:06,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:06,456 INFO L87 Difference]: Start difference. First operand 6184 states and 17069 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:06,892 INFO L93 Difference]: Finished difference Result 8426 states and 21934 transitions. [2021-10-13 22:38:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:38:06,892 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:06,903 INFO L225 Difference]: With dead ends: 8426 [2021-10-13 22:38:06,903 INFO L226 Difference]: Without dead ends: 8274 [2021-10-13 22:38:06,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 470.5ms TimeCoverageRelationStatistics Valid=419, Invalid=1221, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:38:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8274 states. [2021-10-13 22:38:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8274 to 6184. [2021-10-13 22:38:06,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 2.760633996441857) internal successors, (17069), 6183 states have internal predecessors, (17069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 17069 transitions. [2021-10-13 22:38:06,986 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 17069 transitions. Word has length 67 [2021-10-13 22:38:06,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:06,986 INFO L470 AbstractCegarLoop]: Abstraction has 6184 states and 17069 transitions. [2021-10-13 22:38:06,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 17069 transitions. [2021-10-13 22:38:06,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:06,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:06,992 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:07,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:07,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-10-13 22:38:07,209 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash 750743793, now seen corresponding path program 65 times [2021-10-13 22:38:07,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:07,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760852882] [2021-10-13 22:38:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:07,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:07,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:07,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760852882] [2021-10-13 22:38:07,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760852882] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:07,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407150364] [2021-10-13 22:38:07,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:07,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:07,404 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:07,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-13 22:38:11,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:38:11,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:11,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:11,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:11,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407150364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:11,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:11,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:11,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686175015] [2021-10-13 22:38:11,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:11,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:11,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:11,974 INFO L87 Difference]: Start difference. First operand 6184 states and 17069 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:12,438 INFO L93 Difference]: Finished difference Result 8472 states and 22016 transitions. [2021-10-13 22:38:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:38:12,438 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:12,449 INFO L225 Difference]: With dead ends: 8472 [2021-10-13 22:38:12,449 INFO L226 Difference]: Without dead ends: 8320 [2021-10-13 22:38:12,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 552.7ms TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:38:12,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8320 states. [2021-10-13 22:38:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8320 to 6184. [2021-10-13 22:38:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 2.760633996441857) internal successors, (17069), 6183 states have internal predecessors, (17069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:12,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 17069 transitions. [2021-10-13 22:38:12,526 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 17069 transitions. Word has length 67 [2021-10-13 22:38:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:12,526 INFO L470 AbstractCegarLoop]: Abstraction has 6184 states and 17069 transitions. [2021-10-13 22:38:12,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 17069 transitions. [2021-10-13 22:38:12,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:12,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:12,531 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:12,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:12,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-10-13 22:38:12,747 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1510659293, now seen corresponding path program 66 times [2021-10-13 22:38:12,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:12,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495722468] [2021-10-13 22:38:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:12,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:12,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:12,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495722468] [2021-10-13 22:38:12,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495722468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:12,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579215216] [2021-10-13 22:38:12,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:38:12,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:12,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:12,890 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:12,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-13 22:38:17,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:38:17,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:17,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:17,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:17,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579215216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:17,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:17,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:17,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286524157] [2021-10-13 22:38:17,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:17,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:17,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:17,576 INFO L87 Difference]: Start difference. First operand 6184 states and 17069 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:17,982 INFO L93 Difference]: Finished difference Result 8408 states and 21888 transitions. [2021-10-13 22:38:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:38:17,982 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:17,994 INFO L225 Difference]: With dead ends: 8408 [2021-10-13 22:38:17,994 INFO L226 Difference]: Without dead ends: 8256 [2021-10-13 22:38:17,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 449.4ms TimeCoverageRelationStatistics Valid=434, Invalid=1288, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:38:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8256 states. [2021-10-13 22:38:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8256 to 6109. [2021-10-13 22:38:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6109 states, 6108 states have (on average 2.767518009168304) internal successors, (16904), 6108 states have internal predecessors, (16904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6109 states to 6109 states and 16904 transitions. [2021-10-13 22:38:18,082 INFO L78 Accepts]: Start accepts. Automaton has 6109 states and 16904 transitions. Word has length 67 [2021-10-13 22:38:18,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:18,082 INFO L470 AbstractCegarLoop]: Abstraction has 6109 states and 16904 transitions. [2021-10-13 22:38:18,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:18,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6109 states and 16904 transitions. [2021-10-13 22:38:18,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:18,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:18,088 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:18,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-13 22:38:18,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-13 22:38:18,304 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:18,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:18,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1270360241, now seen corresponding path program 67 times [2021-10-13 22:38:18,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:18,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659618879] [2021-10-13 22:38:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:18,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:18,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:18,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659618879] [2021-10-13 22:38:18,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659618879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:18,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154363757] [2021-10-13 22:38:18,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:38:18,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:18,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:18,524 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:18,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-13 22:38:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:22,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:22,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:23,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154363757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:23,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:23,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:23,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317587263] [2021-10-13 22:38:23,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:23,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:23,235 INFO L87 Difference]: Start difference. First operand 6109 states and 16904 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:23,674 INFO L93 Difference]: Finished difference Result 8353 states and 21775 transitions. [2021-10-13 22:38:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:38:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:23,684 INFO L225 Difference]: With dead ends: 8353 [2021-10-13 22:38:23,685 INFO L226 Difference]: Without dead ends: 8201 [2021-10-13 22:38:23,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 472.2ms TimeCoverageRelationStatistics Valid=491, Invalid=1401, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:38:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2021-10-13 22:38:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 6254. [2021-10-13 22:38:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6254 states, 6253 states have (on average 2.754357908204062) internal successors, (17223), 6253 states have internal predecessors, (17223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6254 states to 6254 states and 17223 transitions. [2021-10-13 22:38:23,764 INFO L78 Accepts]: Start accepts. Automaton has 6254 states and 17223 transitions. Word has length 67 [2021-10-13 22:38:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:23,764 INFO L470 AbstractCegarLoop]: Abstraction has 6254 states and 17223 transitions. [2021-10-13 22:38:23,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 6254 states and 17223 transitions. [2021-10-13 22:38:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:23,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:23,770 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:23,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:23,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-13 22:38:23,979 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:23,980 INFO L82 PathProgramCache]: Analyzing trace with hash 894659747, now seen corresponding path program 68 times [2021-10-13 22:38:23,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:23,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559537183] [2021-10-13 22:38:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:23,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:24,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:24,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559537183] [2021-10-13 22:38:24,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559537183] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:24,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113595664] [2021-10-13 22:38:24,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:24,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:24,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:24,107 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:24,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-13 22:38:28,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:28,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:28,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:28,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:28,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113595664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:28,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:28,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:28,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525742556] [2021-10-13 22:38:28,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:28,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:28,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:28,833 INFO L87 Difference]: Start difference. First operand 6254 states and 17223 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:29,328 INFO L93 Difference]: Finished difference Result 8636 states and 22356 transitions. [2021-10-13 22:38:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:38:29,329 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:29,339 INFO L225 Difference]: With dead ends: 8636 [2021-10-13 22:38:29,339 INFO L226 Difference]: Without dead ends: 8484 [2021-10-13 22:38:29,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 532.4ms TimeCoverageRelationStatistics Valid=541, Invalid=1529, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:38:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8484 states. [2021-10-13 22:38:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8484 to 6274. [2021-10-13 22:38:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6274 states, 6273 states have (on average 2.7525904670811414) internal successors, (17267), 6273 states have internal predecessors, (17267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:29,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 17267 transitions. [2021-10-13 22:38:29,418 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 17267 transitions. Word has length 67 [2021-10-13 22:38:29,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:29,419 INFO L470 AbstractCegarLoop]: Abstraction has 6274 states and 17267 transitions. [2021-10-13 22:38:29,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:29,419 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 17267 transitions. [2021-10-13 22:38:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:29,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:29,424 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:29,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-10-13 22:38:29,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-10-13 22:38:29,634 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:29,635 INFO L82 PathProgramCache]: Analyzing trace with hash 480480255, now seen corresponding path program 69 times [2021-10-13 22:38:29,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:29,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861443728] [2021-10-13 22:38:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:29,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:29,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:29,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861443728] [2021-10-13 22:38:29,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861443728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:29,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905809428] [2021-10-13 22:38:29,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:29,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:29,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:29,760 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:29,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-13 22:38:34,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:38:34,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:34,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:34,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:34,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905809428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:34,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:34,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:34,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104861117] [2021-10-13 22:38:34,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:34,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:34,620 INFO L87 Difference]: Start difference. First operand 6274 states and 17267 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:34,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:34,987 INFO L93 Difference]: Finished difference Result 8670 states and 22418 transitions. [2021-10-13 22:38:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:38:34,987 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:34,998 INFO L225 Difference]: With dead ends: 8670 [2021-10-13 22:38:34,998 INFO L226 Difference]: Without dead ends: 8518 [2021-10-13 22:38:34,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 417.4ms TimeCoverageRelationStatistics Valid=598, Invalid=1658, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:38:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2021-10-13 22:38:35,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 6349. [2021-10-13 22:38:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6349 states, 6348 states have (on average 2.7460617517328294) internal successors, (17432), 6348 states have internal predecessors, (17432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6349 states to 6349 states and 17432 transitions. [2021-10-13 22:38:35,077 INFO L78 Accepts]: Start accepts. Automaton has 6349 states and 17432 transitions. Word has length 67 [2021-10-13 22:38:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:35,077 INFO L470 AbstractCegarLoop]: Abstraction has 6349 states and 17432 transitions. [2021-10-13 22:38:35,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6349 states and 17432 transitions. [2021-10-13 22:38:35,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:35,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:35,082 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:35,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-10-13 22:38:35,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:35,284 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash 104779761, now seen corresponding path program 70 times [2021-10-13 22:38:35,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:35,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028506462] [2021-10-13 22:38:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:35,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:35,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:35,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028506462] [2021-10-13 22:38:35,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028506462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:35,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738991501] [2021-10-13 22:38:35,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:35,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:35,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:35,424 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:35,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-13 22:38:39,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:39,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:39,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:39,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:40,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738991501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:40,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:40,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:40,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637395318] [2021-10-13 22:38:40,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:40,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:40,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:40,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:40,260 INFO L87 Difference]: Start difference. First operand 6349 states and 17432 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:40,774 INFO L93 Difference]: Finished difference Result 8666 states and 22406 transitions. [2021-10-13 22:38:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:38:40,774 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:40,788 INFO L225 Difference]: With dead ends: 8666 [2021-10-13 22:38:40,788 INFO L226 Difference]: Without dead ends: 8514 [2021-10-13 22:38:40,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 477.7ms TimeCoverageRelationStatistics Valid=629, Invalid=1723, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:38:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8514 states. [2021-10-13 22:38:40,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8514 to 6339. [2021-10-13 22:38:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6339 states, 6338 states have (on average 2.7469233196591984) internal successors, (17410), 6338 states have internal predecessors, (17410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6339 states to 6339 states and 17410 transitions. [2021-10-13 22:38:40,864 INFO L78 Accepts]: Start accepts. Automaton has 6339 states and 17410 transitions. Word has length 67 [2021-10-13 22:38:40,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:40,864 INFO L470 AbstractCegarLoop]: Abstraction has 6339 states and 17410 transitions. [2021-10-13 22:38:40,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,864 INFO L276 IsEmpty]: Start isEmpty. Operand 6339 states and 17410 transitions. [2021-10-13 22:38:40,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:40,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:40,870 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:40,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:41,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:41,083 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:41,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1272452587, now seen corresponding path program 71 times [2021-10-13 22:38:41,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:41,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273656371] [2021-10-13 22:38:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:41,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:41,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:41,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273656371] [2021-10-13 22:38:41,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273656371] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:41,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515362523] [2021-10-13 22:38:41,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:41,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:41,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:41,233 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:41,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-13 22:38:45,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:38:45,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:45,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:45,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:46,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515362523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:46,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:46,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:46,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100655519] [2021-10-13 22:38:46,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:46,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:46,067 INFO L87 Difference]: Start difference. First operand 6339 states and 17410 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:46,669 INFO L93 Difference]: Finished difference Result 8681 states and 22431 transitions. [2021-10-13 22:38:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:38:46,669 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:46,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:46,681 INFO L225 Difference]: With dead ends: 8681 [2021-10-13 22:38:46,681 INFO L226 Difference]: Without dead ends: 8529 [2021-10-13 22:38:46,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 605.3ms TimeCoverageRelationStatistics Valid=596, Invalid=1660, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:38:46,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8529 states. [2021-10-13 22:38:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8529 to 6354. [2021-10-13 22:38:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 6353 states have (on average 2.745159767039194) internal successors, (17440), 6353 states have internal predecessors, (17440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 17440 transitions. [2021-10-13 22:38:46,764 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 17440 transitions. Word has length 67 [2021-10-13 22:38:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:46,764 INFO L470 AbstractCegarLoop]: Abstraction has 6354 states and 17440 transitions. [2021-10-13 22:38:46,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 17440 transitions. [2021-10-13 22:38:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:46,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:46,770 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:46,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-10-13 22:38:46,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-13 22:38:46,987 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:46,987 INFO L82 PathProgramCache]: Analyzing trace with hash 563000169, now seen corresponding path program 72 times [2021-10-13 22:38:46,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:46,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253896615] [2021-10-13 22:38:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:46,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:47,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:47,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253896615] [2021-10-13 22:38:47,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253896615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:47,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728936927] [2021-10-13 22:38:47,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:38:47,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:47,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:47,183 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:47,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-13 22:38:51,650 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:38:51,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:51,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:51,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:52,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728936927] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:52,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:52,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:52,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880763300] [2021-10-13 22:38:52,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:52,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:52,198 INFO L87 Difference]: Start difference. First operand 6354 states and 17440 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:52,744 INFO L93 Difference]: Finished difference Result 8595 states and 22261 transitions. [2021-10-13 22:38:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:38:52,745 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:52,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:52,758 INFO L225 Difference]: With dead ends: 8595 [2021-10-13 22:38:52,758 INFO L226 Difference]: Without dead ends: 8443 [2021-10-13 22:38:52,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 592.5ms TimeCoverageRelationStatistics Valid=525, Invalid=1455, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:38:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8443 states. [2021-10-13 22:38:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8443 to 6304. [2021-10-13 22:38:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6304 states, 6303 states have (on average 2.749484372521022) internal successors, (17330), 6303 states have internal predecessors, (17330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6304 states to 6304 states and 17330 transitions. [2021-10-13 22:38:52,858 INFO L78 Accepts]: Start accepts. Automaton has 6304 states and 17330 transitions. Word has length 67 [2021-10-13 22:38:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:52,858 INFO L470 AbstractCegarLoop]: Abstraction has 6304 states and 17330 transitions. [2021-10-13 22:38:52,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 6304 states and 17330 transitions. [2021-10-13 22:38:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:52,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:52,864 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:52,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-13 22:38:53,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2021-10-13 22:38:53,066 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:53,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1241569009, now seen corresponding path program 73 times [2021-10-13 22:38:53,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:53,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065563233] [2021-10-13 22:38:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:53,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:53,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:53,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065563233] [2021-10-13 22:38:53,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065563233] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:53,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147301327] [2021-10-13 22:38:53,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:38:53,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:53,213 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:53,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-13 22:38:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:57,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:57,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:58,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147301327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:58,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:58,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:58,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617243615] [2021-10-13 22:38:58,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:58,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:58,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:58,277 INFO L87 Difference]: Start difference. First operand 6304 states and 17330 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:58,753 INFO L93 Difference]: Finished difference Result 8228 states and 21508 transitions. [2021-10-13 22:38:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:38:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:58,764 INFO L225 Difference]: With dead ends: 8228 [2021-10-13 22:38:58,764 INFO L226 Difference]: Without dead ends: 8076 [2021-10-13 22:38:58,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 510.1ms TimeCoverageRelationStatistics Valid=441, Invalid=1281, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:38:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-10-13 22:38:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 6299. [2021-10-13 22:38:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6299 states, 6298 states have (on average 2.7499206097173707) internal successors, (17319), 6298 states have internal predecessors, (17319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 17319 transitions. [2021-10-13 22:38:58,840 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 17319 transitions. Word has length 67 [2021-10-13 22:38:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:58,840 INFO L470 AbstractCegarLoop]: Abstraction has 6299 states and 17319 transitions. [2021-10-13 22:38:58,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:58,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 17319 transitions. [2021-10-13 22:38:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:58,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:58,846 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:58,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-10-13 22:38:59,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:59,067 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2031448995, now seen corresponding path program 74 times [2021-10-13 22:38:59,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:59,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617249045] [2021-10-13 22:38:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:59,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:59,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:59,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617249045] [2021-10-13 22:38:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617249045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:59,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658904899] [2021-10-13 22:38:59,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:59,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:59,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:59,278 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:59,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-13 22:39:03,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:03,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:03,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:03,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:04,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658904899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:04,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:04,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:04,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187880231] [2021-10-13 22:39:04,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:04,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:04,491 INFO L87 Difference]: Start difference. First operand 6299 states and 17319 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:05,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:05,082 INFO L93 Difference]: Finished difference Result 8196 states and 21436 transitions. [2021-10-13 22:39:05,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:39:05,082 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:05,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:05,178 INFO L225 Difference]: With dead ends: 8196 [2021-10-13 22:39:05,178 INFO L226 Difference]: Without dead ends: 8044 [2021-10-13 22:39:05,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 620.1ms TimeCoverageRelationStatistics Valid=443, Invalid=1279, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:39:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2021-10-13 22:39:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 6239. [2021-10-13 22:39:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6239 states, 6238 states have (on average 2.7552100032061557) internal successors, (17187), 6238 states have internal predecessors, (17187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 17187 transitions. [2021-10-13 22:39:05,276 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 17187 transitions. Word has length 67 [2021-10-13 22:39:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:05,276 INFO L470 AbstractCegarLoop]: Abstraction has 6239 states and 17187 transitions. [2021-10-13 22:39:05,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 17187 transitions. [2021-10-13 22:39:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:05,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:05,281 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:05,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:05,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:05,495 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:05,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:05,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1929165809, now seen corresponding path program 75 times [2021-10-13 22:39:05,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:05,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158501225] [2021-10-13 22:39:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:05,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:05,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:05,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158501225] [2021-10-13 22:39:05,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158501225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:05,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665156746] [2021-10-13 22:39:05,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:05,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:05,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:05,624 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:05,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-13 22:39:10,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:39:10,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:10,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:10,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:10,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665156746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:10,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:10,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:10,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367861180] [2021-10-13 22:39:10,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:10,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:10,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:10,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:10,727 INFO L87 Difference]: Start difference. First operand 6239 states and 17187 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:11,137 INFO L93 Difference]: Finished difference Result 8177 states and 21391 transitions. [2021-10-13 22:39:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:39:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:11,147 INFO L225 Difference]: With dead ends: 8177 [2021-10-13 22:39:11,147 INFO L226 Difference]: Without dead ends: 8025 [2021-10-13 22:39:11,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 451.9ms TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:39:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8025 states. [2021-10-13 22:39:11,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8025 to 6188. [2021-10-13 22:39:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 6187 states have (on average 2.7590108291579116) internal successors, (17070), 6187 states have internal predecessors, (17070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:11,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 17070 transitions. [2021-10-13 22:39:11,227 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 17070 transitions. Word has length 67 [2021-10-13 22:39:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:11,227 INFO L470 AbstractCegarLoop]: Abstraction has 6188 states and 17070 transitions. [2021-10-13 22:39:11,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 17070 transitions. [2021-10-13 22:39:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:11,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:11,232 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:11,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:11,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-13 22:39:11,451 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:11,452 INFO L82 PathProgramCache]: Analyzing trace with hash 728306231, now seen corresponding path program 76 times [2021-10-13 22:39:11,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:11,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889404863] [2021-10-13 22:39:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:11,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:11,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:11,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889404863] [2021-10-13 22:39:11,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889404863] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:11,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494348258] [2021-10-13 22:39:11,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:11,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:11,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:11,594 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:11,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-13 22:39:16,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:39:16,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:16,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:16,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:16,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494348258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:16,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:16,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:16,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161951228] [2021-10-13 22:39:16,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:16,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:16,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:16,886 INFO L87 Difference]: Start difference. First operand 6188 states and 17070 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:17,231 INFO L93 Difference]: Finished difference Result 8980 states and 23060 transitions. [2021-10-13 22:39:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:39:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:17,243 INFO L225 Difference]: With dead ends: 8980 [2021-10-13 22:39:17,243 INFO L226 Difference]: Without dead ends: 8828 [2021-10-13 22:39:17,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 382.2ms TimeCoverageRelationStatistics Valid=406, Invalid=1076, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:39:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8828 states. [2021-10-13 22:39:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8828 to 6238. [2021-10-13 22:39:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 2.754529421196088) internal successors, (17180), 6237 states have internal predecessors, (17180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:17,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 17180 transitions. [2021-10-13 22:39:17,323 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 17180 transitions. Word has length 67 [2021-10-13 22:39:17,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:17,324 INFO L470 AbstractCegarLoop]: Abstraction has 6238 states and 17180 transitions. [2021-10-13 22:39:17,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 17180 transitions. [2021-10-13 22:39:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:17,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:17,329 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:17,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-13 22:39:17,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-13 22:39:17,551 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash -2041114941, now seen corresponding path program 77 times [2021-10-13 22:39:17,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:17,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426689284] [2021-10-13 22:39:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:17,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:17,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:17,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426689284] [2021-10-13 22:39:17,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426689284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:17,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371174049] [2021-10-13 22:39:17,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:39:17,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:17,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:17,678 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:17,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-13 22:39:22,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:39:22,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:22,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:22,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:22,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371174049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:22,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:22,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:22,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159413357] [2021-10-13 22:39:22,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:22,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:22,897 INFO L87 Difference]: Start difference. First operand 6238 states and 17180 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:23,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:23,347 INFO L93 Difference]: Finished difference Result 8991 states and 23089 transitions. [2021-10-13 22:39:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:39:23,347 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:23,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:23,357 INFO L225 Difference]: With dead ends: 8991 [2021-10-13 22:39:23,357 INFO L226 Difference]: Without dead ends: 8839 [2021-10-13 22:39:23,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 437.6ms TimeCoverageRelationStatistics Valid=488, Invalid=1404, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:39:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2021-10-13 22:39:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 6313. [2021-10-13 22:39:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6313 states, 6312 states have (on average 2.747940430925222) internal successors, (17345), 6312 states have internal predecessors, (17345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 17345 transitions. [2021-10-13 22:39:23,437 INFO L78 Accepts]: Start accepts. Automaton has 6313 states and 17345 transitions. Word has length 67 [2021-10-13 22:39:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:23,438 INFO L470 AbstractCegarLoop]: Abstraction has 6313 states and 17345 transitions. [2021-10-13 22:39:23,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6313 states and 17345 transitions. [2021-10-13 22:39:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:23,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:23,445 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:23,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:23,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-13 22:39:23,654 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:23,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:23,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1878151861, now seen corresponding path program 78 times [2021-10-13 22:39:23,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:23,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161535611] [2021-10-13 22:39:23,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:23,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:23,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:23,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161535611] [2021-10-13 22:39:23,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161535611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:23,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588668962] [2021-10-13 22:39:23,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:39:23,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:23,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:23,788 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:23,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-13 22:39:28,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:39:28,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:28,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:28,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:29,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588668962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:29,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:29,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:29,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930593053] [2021-10-13 22:39:29,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:29,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:29,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:29,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:29,311 INFO L87 Difference]: Start difference. First operand 6313 states and 17345 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:29,882 INFO L93 Difference]: Finished difference Result 8996 states and 23092 transitions. [2021-10-13 22:39:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:39:29,882 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:29,894 INFO L225 Difference]: With dead ends: 8996 [2021-10-13 22:39:29,894 INFO L226 Difference]: Without dead ends: 8844 [2021-10-13 22:39:29,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 573.5ms TimeCoverageRelationStatistics Valid=556, Invalid=1514, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:39:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8844 states. [2021-10-13 22:39:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8844 to 6363. [2021-10-13 22:39:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6363 states, 6362 states have (on average 2.7436340773341716) internal successors, (17455), 6362 states have internal predecessors, (17455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:29,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6363 states to 6363 states and 17455 transitions. [2021-10-13 22:39:29,975 INFO L78 Accepts]: Start accepts. Automaton has 6363 states and 17455 transitions. Word has length 67 [2021-10-13 22:39:29,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:29,975 INFO L470 AbstractCegarLoop]: Abstraction has 6363 states and 17455 transitions. [2021-10-13 22:39:29,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6363 states and 17455 transitions. [2021-10-13 22:39:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:29,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:29,981 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:29,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-10-13 22:39:30,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:30,198 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:30,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:30,198 INFO L82 PathProgramCache]: Analyzing trace with hash 388435113, now seen corresponding path program 79 times [2021-10-13 22:39:30,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:30,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430604221] [2021-10-13 22:39:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:30,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:30,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:30,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430604221] [2021-10-13 22:39:30,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430604221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:30,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125207596] [2021-10-13 22:39:30,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:39:30,319 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:30,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:30,320 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:30,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-13 22:39:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:35,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:35,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:35,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125207596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:35,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:35,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:35,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204603450] [2021-10-13 22:39:35,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:35,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:35,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:35,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:35,797 INFO L87 Difference]: Start difference. First operand 6363 states and 17455 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:36,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:36,283 INFO L93 Difference]: Finished difference Result 9060 states and 23212 transitions. [2021-10-13 22:39:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:39:36,283 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:36,295 INFO L225 Difference]: With dead ends: 9060 [2021-10-13 22:39:36,295 INFO L226 Difference]: Without dead ends: 8908 [2021-10-13 22:39:36,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 474.0ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:39:36,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8908 states. [2021-10-13 22:39:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8908 to 6338. [2021-10-13 22:39:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6338 states, 6337 states have (on average 2.745778759665457) internal successors, (17400), 6337 states have internal predecessors, (17400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6338 states to 6338 states and 17400 transitions. [2021-10-13 22:39:36,379 INFO L78 Accepts]: Start accepts. Automaton has 6338 states and 17400 transitions. Word has length 67 [2021-10-13 22:39:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:36,379 INFO L470 AbstractCegarLoop]: Abstraction has 6338 states and 17400 transitions. [2021-10-13 22:39:36,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 6338 states and 17400 transitions. [2021-10-13 22:39:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:36,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:36,384 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:36,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:36,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-13 22:39:36,600 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:36,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash -340981321, now seen corresponding path program 80 times [2021-10-13 22:39:36,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:36,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562772289] [2021-10-13 22:39:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:36,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:36,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:36,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562772289] [2021-10-13 22:39:36,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562772289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:36,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220953506] [2021-10-13 22:39:36,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:39:36,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:36,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:36,722 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:36,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-13 22:39:41,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:41,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:41,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:42,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220953506] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:42,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:42,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:42,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735127944] [2021-10-13 22:39:42,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:42,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:42,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:42,121 INFO L87 Difference]: Start difference. First operand 6338 states and 17400 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:42,570 INFO L93 Difference]: Finished difference Result 9097 states and 23271 transitions. [2021-10-13 22:39:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:39:42,571 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:42,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:42,585 INFO L225 Difference]: With dead ends: 9097 [2021-10-13 22:39:42,585 INFO L226 Difference]: Without dead ends: 8945 [2021-10-13 22:39:42,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 451.7ms TimeCoverageRelationStatistics Valid=619, Invalid=1931, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:39:42,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2021-10-13 22:39:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6413. [2021-10-13 22:39:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6413 states, 6412 states have (on average 2.739394884591391) internal successors, (17565), 6412 states have internal predecessors, (17565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6413 states to 6413 states and 17565 transitions. [2021-10-13 22:39:42,673 INFO L78 Accepts]: Start accepts. Automaton has 6413 states and 17565 transitions. Word has length 67 [2021-10-13 22:39:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:42,674 INFO L470 AbstractCegarLoop]: Abstraction has 6413 states and 17565 transitions. [2021-10-13 22:39:42,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6413 states and 17565 transitions. [2021-10-13 22:39:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:42,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:42,679 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:42,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:42,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-10-13 22:39:42,883 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:42,884 INFO L82 PathProgramCache]: Analyzing trace with hash -716681815, now seen corresponding path program 81 times [2021-10-13 22:39:42,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:42,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518853074] [2021-10-13 22:39:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:42,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:43,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:43,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518853074] [2021-10-13 22:39:43,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518853074] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:43,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041787789] [2021-10-13 22:39:43,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:43,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:43,006 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:43,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-13 22:39:48,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:39:48,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:48,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:48,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:48,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041787789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:48,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:48,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:48,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137329748] [2021-10-13 22:39:48,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:48,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:48,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:48,480 INFO L87 Difference]: Start difference. First operand 6413 states and 17565 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:48,980 INFO L93 Difference]: Finished difference Result 9236 states and 23524 transitions. [2021-10-13 22:39:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:39:48,980 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:48,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:48,992 INFO L225 Difference]: With dead ends: 9236 [2021-10-13 22:39:48,992 INFO L226 Difference]: Without dead ends: 9084 [2021-10-13 22:39:48,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 491.6ms TimeCoverageRelationStatistics Valid=582, Invalid=1674, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:39:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9084 states. [2021-10-13 22:39:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9084 to 6463. [2021-10-13 22:39:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6463 states, 6462 states have (on average 2.7352212937171156) internal successors, (17675), 6462 states have internal predecessors, (17675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 17675 transitions. [2021-10-13 22:39:49,126 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 17675 transitions. Word has length 67 [2021-10-13 22:39:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:49,126 INFO L470 AbstractCegarLoop]: Abstraction has 6463 states and 17675 transitions. [2021-10-13 22:39:49,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 17675 transitions. [2021-10-13 22:39:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:49,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:49,132 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:49,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:49,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-10-13 22:39:49,333 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash -305850193, now seen corresponding path program 28 times [2021-10-13 22:39:49,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:49,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042376063] [2021-10-13 22:39:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:49,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:49,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:49,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042376063] [2021-10-13 22:39:49,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042376063] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:49,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342664919] [2021-10-13 22:39:49,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:49,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:49,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:49,506 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:49,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-13 22:39:54,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:39:54,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:54,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:54,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:55,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342664919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:55,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:55,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-10-13 22:39:55,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839681457] [2021-10-13 22:39:55,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:39:55,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:39:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:39:55,002 INFO L87 Difference]: Start difference. First operand 6463 states and 17675 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:55,381 INFO L93 Difference]: Finished difference Result 8701 states and 22507 transitions. [2021-10-13 22:39:55,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:39:55,381 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:55,392 INFO L225 Difference]: With dead ends: 8701 [2021-10-13 22:39:55,392 INFO L226 Difference]: Without dead ends: 8549 [2021-10-13 22:39:55,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 399.3ms TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:39:55,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8549 states. [2021-10-13 22:39:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8549 to 6438. [2021-10-13 22:39:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 6437 states have (on average 2.737299984464813) internal successors, (17620), 6437 states have internal predecessors, (17620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 17620 transitions. [2021-10-13 22:39:55,472 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 17620 transitions. Word has length 67 [2021-10-13 22:39:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:55,472 INFO L470 AbstractCegarLoop]: Abstraction has 6438 states and 17620 transitions. [2021-10-13 22:39:55,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 17620 transitions. [2021-10-13 22:39:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:55,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:55,478 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:55,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:55,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-13 22:39:55,691 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:55,692 INFO L82 PathProgramCache]: Analyzing trace with hash -959591535, now seen corresponding path program 82 times [2021-10-13 22:39:55,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:55,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851604180] [2021-10-13 22:39:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:55,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:55,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:55,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851604180] [2021-10-13 22:39:55,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851604180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:55,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841864072] [2021-10-13 22:39:55,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:55,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:55,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:55,790 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:55,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-13 22:40:00,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:00,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:00,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:00,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:01,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841864072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:01,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:01,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:01,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534671780] [2021-10-13 22:40:01,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:01,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:01,391 INFO L87 Difference]: Start difference. First operand 6438 states and 17620 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:01,980 INFO L93 Difference]: Finished difference Result 8947 states and 22981 transitions. [2021-10-13 22:40:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:40:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:01,992 INFO L225 Difference]: With dead ends: 8947 [2021-10-13 22:40:01,992 INFO L226 Difference]: Without dead ends: 8795 [2021-10-13 22:40:01,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 512.8ms TimeCoverageRelationStatistics Valid=508, Invalid=1562, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:40:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2021-10-13 22:40:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 6438. [2021-10-13 22:40:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 6437 states have (on average 2.737299984464813) internal successors, (17620), 6437 states have internal predecessors, (17620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 17620 transitions. [2021-10-13 22:40:02,080 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 17620 transitions. Word has length 67 [2021-10-13 22:40:02,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:02,080 INFO L470 AbstractCegarLoop]: Abstraction has 6438 states and 17620 transitions. [2021-10-13 22:40:02,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 17620 transitions. [2021-10-13 22:40:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:02,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:02,086 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:02,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:02,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:02,287 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:02,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1335292029, now seen corresponding path program 83 times [2021-10-13 22:40:02,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:02,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547127968] [2021-10-13 22:40:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:02,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:02,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:02,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547127968] [2021-10-13 22:40:02,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547127968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:02,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939343127] [2021-10-13 22:40:02,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:02,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:02,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:02,438 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:02,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-13 22:40:07,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:40:07,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:07,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:07,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:08,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939343127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:08,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:08,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:08,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971132683] [2021-10-13 22:40:08,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:08,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:08,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:08,065 INFO L87 Difference]: Start difference. First operand 6438 states and 17620 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:08,674 INFO L93 Difference]: Finished difference Result 9016 states and 23104 transitions. [2021-10-13 22:40:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:40:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:08,686 INFO L225 Difference]: With dead ends: 9016 [2021-10-13 22:40:08,686 INFO L226 Difference]: Without dead ends: 8864 [2021-10-13 22:40:08,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 597.6ms TimeCoverageRelationStatistics Valid=600, Invalid=1850, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:40:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8864 states. [2021-10-13 22:40:08,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8864 to 6438. [2021-10-13 22:40:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 6437 states have (on average 2.737299984464813) internal successors, (17620), 6437 states have internal predecessors, (17620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 17620 transitions. [2021-10-13 22:40:08,774 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 17620 transitions. Word has length 67 [2021-10-13 22:40:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:08,775 INFO L470 AbstractCegarLoop]: Abstraction has 6438 states and 17620 transitions. [2021-10-13 22:40:08,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 17620 transitions. [2021-10-13 22:40:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:08,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:08,787 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:08,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:09,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:09,008 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash -575376529, now seen corresponding path program 84 times [2021-10-13 22:40:09,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:09,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563763996] [2021-10-13 22:40:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:09,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:09,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:09,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563763996] [2021-10-13 22:40:09,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563763996] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:09,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534669751] [2021-10-13 22:40:09,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:09,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:09,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:09,175 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:09,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-13 22:40:14,443 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:40:14,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:14,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:14,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:14,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534669751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:14,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:14,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:14,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882874915] [2021-10-13 22:40:14,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:14,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:14,874 INFO L87 Difference]: Start difference. First operand 6438 states and 17620 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:15,360 INFO L93 Difference]: Finished difference Result 8777 states and 22631 transitions. [2021-10-13 22:40:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:40:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:15,371 INFO L225 Difference]: With dead ends: 8777 [2021-10-13 22:40:15,371 INFO L226 Difference]: Without dead ends: 8625 [2021-10-13 22:40:15,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 461.0ms TimeCoverageRelationStatistics Valid=454, Invalid=1438, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:40:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8625 states. [2021-10-13 22:40:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8625 to 6338. [2021-10-13 22:40:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6338 states, 6337 states have (on average 2.745778759665457) internal successors, (17400), 6337 states have internal predecessors, (17400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6338 states to 6338 states and 17400 transitions. [2021-10-13 22:40:15,454 INFO L78 Accepts]: Start accepts. Automaton has 6338 states and 17400 transitions. Word has length 67 [2021-10-13 22:40:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:15,454 INFO L470 AbstractCegarLoop]: Abstraction has 6338 states and 17400 transitions. [2021-10-13 22:40:15,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6338 states and 17400 transitions. [2021-10-13 22:40:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:15,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:15,460 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:15,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:15,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:15,667 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1405787655, now seen corresponding path program 85 times [2021-10-13 22:40:15,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:15,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670478374] [2021-10-13 22:40:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:15,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:15,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:15,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670478374] [2021-10-13 22:40:15,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670478374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:15,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625188759] [2021-10-13 22:40:15,780 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:15,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:15,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:15,781 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:15,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-13 22:40:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:21,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:21,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:21,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625188759] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:21,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:21,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:21,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323931823] [2021-10-13 22:40:21,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:21,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:21,570 INFO L87 Difference]: Start difference. First operand 6338 states and 17400 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:21,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:21,920 INFO L93 Difference]: Finished difference Result 8960 states and 23030 transitions. [2021-10-13 22:40:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:40:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:21,936 INFO L225 Difference]: With dead ends: 8960 [2021-10-13 22:40:21,936 INFO L226 Difference]: Without dead ends: 8808 [2021-10-13 22:40:21,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 377.5ms TimeCoverageRelationStatistics Valid=415, Invalid=1145, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:40:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8808 states. [2021-10-13 22:40:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8808 to 6363. [2021-10-13 22:40:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6363 states, 6362 states have (on average 2.7436340773341716) internal successors, (17455), 6362 states have internal predecessors, (17455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6363 states to 6363 states and 17455 transitions. [2021-10-13 22:40:22,028 INFO L78 Accepts]: Start accepts. Automaton has 6363 states and 17455 transitions. Word has length 67 [2021-10-13 22:40:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:22,028 INFO L470 AbstractCegarLoop]: Abstraction has 6363 states and 17455 transitions. [2021-10-13 22:40:22,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6363 states and 17455 transitions. [2021-10-13 22:40:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:22,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:22,034 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:22,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:22,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-10-13 22:40:22,247 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:22,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:22,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1363633517, now seen corresponding path program 86 times [2021-10-13 22:40:22,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:22,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983340095] [2021-10-13 22:40:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:22,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:22,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:22,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983340095] [2021-10-13 22:40:22,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983340095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:22,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872871403] [2021-10-13 22:40:22,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:40:22,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:22,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:22,457 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:22,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-13 22:40:27,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:40:27,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:27,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:27,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:28,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872871403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:28,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:28,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:28,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168363189] [2021-10-13 22:40:28,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:28,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:28,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:28,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:28,152 INFO L87 Difference]: Start difference. First operand 6363 states and 17455 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:28,600 INFO L93 Difference]: Finished difference Result 9111 states and 23359 transitions. [2021-10-13 22:40:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:40:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:28,613 INFO L225 Difference]: With dead ends: 9111 [2021-10-13 22:40:28,613 INFO L226 Difference]: Without dead ends: 8959 [2021-10-13 22:40:28,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 439.3ms TimeCoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:40:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8959 states. [2021-10-13 22:40:28,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8959 to 6438. [2021-10-13 22:40:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 6437 states have (on average 2.737299984464813) internal successors, (17620), 6437 states have internal predecessors, (17620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 17620 transitions. [2021-10-13 22:40:28,753 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 17620 transitions. Word has length 67 [2021-10-13 22:40:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:28,753 INFO L470 AbstractCegarLoop]: Abstraction has 6438 states and 17620 transitions. [2021-10-13 22:40:28,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 17620 transitions. [2021-10-13 22:40:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:28,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:28,758 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:28,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:28,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-10-13 22:40:28,972 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:28,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1739334011, now seen corresponding path program 87 times [2021-10-13 22:40:28,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:28,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512243856] [2021-10-13 22:40:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:28,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:29,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:29,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512243856] [2021-10-13 22:40:29,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512243856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:29,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581325838] [2021-10-13 22:40:29,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:40:29,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:29,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:29,123 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:29,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-13 22:40:34,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:40:34,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:34,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:34,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:34,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581325838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:34,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:34,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:34,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307395256] [2021-10-13 22:40:34,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:34,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:34,934 INFO L87 Difference]: Start difference. First operand 6438 states and 17620 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:35,518 INFO L93 Difference]: Finished difference Result 9041 states and 23197 transitions. [2021-10-13 22:40:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:40:35,518 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:35,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:35,529 INFO L225 Difference]: With dead ends: 9041 [2021-10-13 22:40:35,530 INFO L226 Difference]: Without dead ends: 8889 [2021-10-13 22:40:35,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 571.1ms TimeCoverageRelationStatistics Valid=563, Invalid=1599, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:40:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2021-10-13 22:40:35,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 6413. [2021-10-13 22:40:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6413 states, 6412 states have (on average 2.739394884591391) internal successors, (17565), 6412 states have internal predecessors, (17565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6413 states to 6413 states and 17565 transitions. [2021-10-13 22:40:35,610 INFO L78 Accepts]: Start accepts. Automaton has 6413 states and 17565 transitions. Word has length 67 [2021-10-13 22:40:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:35,610 INFO L470 AbstractCegarLoop]: Abstraction has 6413 states and 17565 transitions. [2021-10-13 22:40:35,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6413 states and 17565 transitions. [2021-10-13 22:40:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:35,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:35,616 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:35,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:35,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-13 22:40:35,839 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:35,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:35,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1065916537, now seen corresponding path program 88 times [2021-10-13 22:40:35,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:35,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560524491] [2021-10-13 22:40:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:35,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:36,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:36,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560524491] [2021-10-13 22:40:36,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560524491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:36,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843549282] [2021-10-13 22:40:36,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:40:36,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:36,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:36,158 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:36,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-13 22:40:41,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:41,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:41,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:41,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:41,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843549282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:41,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:41,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:41,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430087740] [2021-10-13 22:40:41,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:41,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:41,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:41,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:41,973 INFO L87 Difference]: Start difference. First operand 6413 states and 17565 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:42,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:42,422 INFO L93 Difference]: Finished difference Result 9045 states and 23177 transitions. [2021-10-13 22:40:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:40:42,422 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:42,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:42,433 INFO L225 Difference]: With dead ends: 9045 [2021-10-13 22:40:42,433 INFO L226 Difference]: Without dead ends: 8893 [2021-10-13 22:40:42,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 477.7ms TimeCoverageRelationStatistics Valid=455, Invalid=1351, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:40:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2021-10-13 22:40:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 6388. [2021-10-13 22:40:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 6387 states have (on average 2.741506184437138) internal successors, (17510), 6387 states have internal predecessors, (17510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 17510 transitions. [2021-10-13 22:40:42,514 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 17510 transitions. Word has length 67 [2021-10-13 22:40:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:42,514 INFO L470 AbstractCegarLoop]: Abstraction has 6388 states and 17510 transitions. [2021-10-13 22:40:42,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 17510 transitions. [2021-10-13 22:40:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:42,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:42,520 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:42,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:42,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-13 22:40:42,739 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:42,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1795887049, now seen corresponding path program 89 times [2021-10-13 22:40:42,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:42,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732467246] [2021-10-13 22:40:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:42,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:42,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:42,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732467246] [2021-10-13 22:40:42,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732467246] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:42,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753792134] [2021-10-13 22:40:42,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:42,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:42,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:42,875 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:42,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-13 22:40:48,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:40:48,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:48,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:48,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:48,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753792134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:48,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:48,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:48,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803759976] [2021-10-13 22:40:48,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:48,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:48,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:48,818 INFO L87 Difference]: Start difference. First operand 6388 states and 17510 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:49,154 INFO L93 Difference]: Finished difference Result 8920 states and 22950 transitions. [2021-10-13 22:40:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:40:49,154 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:49,166 INFO L225 Difference]: With dead ends: 8920 [2021-10-13 22:40:49,166 INFO L226 Difference]: Without dead ends: 8768 [2021-10-13 22:40:49,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 336.8ms TimeCoverageRelationStatistics Valid=428, Invalid=1212, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:40:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8768 states. [2021-10-13 22:40:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8768 to 6388. [2021-10-13 22:40:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 6387 states have (on average 2.741506184437138) internal successors, (17510), 6387 states have internal predecessors, (17510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:49,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 17510 transitions. [2021-10-13 22:40:49,251 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 17510 transitions. Word has length 67 [2021-10-13 22:40:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:49,251 INFO L470 AbstractCegarLoop]: Abstraction has 6388 states and 17510 transitions. [2021-10-13 22:40:49,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 17510 transitions. [2021-10-13 22:40:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:49,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:49,257 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:49,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:49,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-10-13 22:40:49,468 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:49,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:49,468 INFO L82 PathProgramCache]: Analyzing trace with hash 512962443, now seen corresponding path program 90 times [2021-10-13 22:40:49,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:49,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651736188] [2021-10-13 22:40:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:49,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:49,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:49,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651736188] [2021-10-13 22:40:49,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651736188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:49,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546294934] [2021-10-13 22:40:49,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:49,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:49,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:49,627 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:49,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-13 22:40:54,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:40:54,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:54,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:54,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:55,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546294934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:55,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:55,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:55,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037115944] [2021-10-13 22:40:55,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:55,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:55,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:55,508 INFO L87 Difference]: Start difference. First operand 6388 states and 17510 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:56,183 INFO L93 Difference]: Finished difference Result 11517 states and 30541 transitions. [2021-10-13 22:40:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:40:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:56,200 INFO L225 Difference]: With dead ends: 11517 [2021-10-13 22:40:56,200 INFO L226 Difference]: Without dead ends: 11365 [2021-10-13 22:40:56,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 630.3ms TimeCoverageRelationStatistics Valid=587, Invalid=1765, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:40:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11365 states. [2021-10-13 22:40:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11365 to 6673. [2021-10-13 22:40:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6673 states, 6672 states have (on average 2.768285371702638) internal successors, (18470), 6672 states have internal predecessors, (18470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6673 states to 6673 states and 18470 transitions. [2021-10-13 22:40:56,309 INFO L78 Accepts]: Start accepts. Automaton has 6673 states and 18470 transitions. Word has length 67 [2021-10-13 22:40:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:56,309 INFO L470 AbstractCegarLoop]: Abstraction has 6673 states and 18470 transitions. [2021-10-13 22:40:56,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6673 states and 18470 transitions. [2021-10-13 22:40:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:56,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:56,315 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:56,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:56,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:56,531 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:56,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:56,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1806861553, now seen corresponding path program 91 times [2021-10-13 22:40:56,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:56,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633369507] [2021-10-13 22:40:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:56,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:56,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:56,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633369507] [2021-10-13 22:40:56,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633369507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:56,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846671071] [2021-10-13 22:40:56,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:56,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:56,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:56,651 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:56,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-13 22:41:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:02,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:02,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:02,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846671071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:02,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:02,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:02,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789300858] [2021-10-13 22:41:02,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:02,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:02,656 INFO L87 Difference]: Start difference. First operand 6673 states and 18470 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:03,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:03,464 INFO L93 Difference]: Finished difference Result 14511 states and 38534 transitions. [2021-10-13 22:41:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 22:41:03,465 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:03,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:03,485 INFO L225 Difference]: With dead ends: 14511 [2021-10-13 22:41:03,485 INFO L226 Difference]: Without dead ends: 13953 [2021-10-13 22:41:03,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 715.9ms TimeCoverageRelationStatistics Valid=974, Invalid=3316, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 22:41:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13953 states. [2021-10-13 22:41:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13953 to 6238. [2021-10-13 22:41:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 2.7400994067660736) internal successors, (17090), 6237 states have internal predecessors, (17090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 17090 transitions. [2021-10-13 22:41:03,602 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 17090 transitions. Word has length 67 [2021-10-13 22:41:03,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:03,602 INFO L470 AbstractCegarLoop]: Abstraction has 6238 states and 17090 transitions. [2021-10-13 22:41:03,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:03,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 17090 transitions. [2021-10-13 22:41:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:03,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:03,608 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:03,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:03,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:03,829 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:03,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash 560252031, now seen corresponding path program 92 times [2021-10-13 22:41:03,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:03,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469274720] [2021-10-13 22:41:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:03,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:04,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:04,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469274720] [2021-10-13 22:41:04,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469274720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:04,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206708348] [2021-10-13 22:41:04,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:41:04,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:04,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:04,072 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:04,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-13 22:41:09,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:41:09,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:09,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:09,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:10,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206708348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:10,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:10,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:10,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122943569] [2021-10-13 22:41:10,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:10,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:10,020 INFO L87 Difference]: Start difference. First operand 6238 states and 17090 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:10,626 INFO L93 Difference]: Finished difference Result 12057 states and 31804 transitions. [2021-10-13 22:41:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:41:10,627 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:10,643 INFO L225 Difference]: With dead ends: 12057 [2021-10-13 22:41:10,643 INFO L226 Difference]: Without dead ends: 11905 [2021-10-13 22:41:10,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 567.2ms TimeCoverageRelationStatistics Valid=704, Invalid=2266, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:41:10,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11905 states. [2021-10-13 22:41:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11905 to 6558. [2021-10-13 22:41:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6558 states, 6557 states have (on average 2.771846881195669) internal successors, (18175), 6557 states have internal predecessors, (18175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6558 states to 6558 states and 18175 transitions. [2021-10-13 22:41:10,827 INFO L78 Accepts]: Start accepts. Automaton has 6558 states and 18175 transitions. Word has length 67 [2021-10-13 22:41:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:10,827 INFO L470 AbstractCegarLoop]: Abstraction has 6558 states and 18175 transitions. [2021-10-13 22:41:10,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6558 states and 18175 transitions. [2021-10-13 22:41:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:10,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:10,832 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:10,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:11,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-13 22:41:11,059 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:11,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1759571965, now seen corresponding path program 93 times [2021-10-13 22:41:11,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:11,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445377865] [2021-10-13 22:41:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:11,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:11,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:11,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445377865] [2021-10-13 22:41:11,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445377865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:11,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101643983] [2021-10-13 22:41:11,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:41:11,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:11,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:11,193 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:11,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-13 22:41:16,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:41:16,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:16,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:16,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:17,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101643983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:17,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:17,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:17,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213251365] [2021-10-13 22:41:17,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:17,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:17,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:17,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:17,257 INFO L87 Difference]: Start difference. First operand 6558 states and 18175 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:18,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:18,576 INFO L93 Difference]: Finished difference Result 14576 states and 38642 transitions. [2021-10-13 22:41:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 22:41:18,576 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:18,601 INFO L225 Difference]: With dead ends: 14576 [2021-10-13 22:41:18,601 INFO L226 Difference]: Without dead ends: 14018 [2021-10-13 22:41:18,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1165.8ms TimeCoverageRelationStatistics Valid=1028, Invalid=3664, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 22:41:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14018 states. [2021-10-13 22:41:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14018 to 6513. [2021-10-13 22:41:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6513 states, 6512 states have (on average 2.7587530712530715) internal successors, (17965), 6512 states have internal predecessors, (17965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6513 states to 6513 states and 17965 transitions. [2021-10-13 22:41:18,717 INFO L78 Accepts]: Start accepts. Automaton has 6513 states and 17965 transitions. Word has length 67 [2021-10-13 22:41:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:18,717 INFO L470 AbstractCegarLoop]: Abstraction has 6513 states and 17965 transitions. [2021-10-13 22:41:18,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6513 states and 17965 transitions. [2021-10-13 22:41:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:18,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:18,723 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:18,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:18,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:18,936 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:18,936 INFO L82 PathProgramCache]: Analyzing trace with hash -52418233, now seen corresponding path program 94 times [2021-10-13 22:41:18,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:18,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204834634] [2021-10-13 22:41:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:18,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:19,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:19,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204834634] [2021-10-13 22:41:19,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204834634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:19,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808779781] [2021-10-13 22:41:19,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:41:19,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:19,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:19,074 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:19,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-13 22:41:24,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:41:24,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:24,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:25,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808779781] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:25,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:25,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:25,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193605096] [2021-10-13 22:41:25,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:25,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:25,232 INFO L87 Difference]: Start difference. First operand 6513 states and 17965 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:25,965 INFO L93 Difference]: Finished difference Result 10454 states and 26753 transitions. [2021-10-13 22:41:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:41:25,965 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:25,979 INFO L225 Difference]: With dead ends: 10454 [2021-10-13 22:41:25,979 INFO L226 Difference]: Without dead ends: 10302 [2021-10-13 22:41:25,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 692.6ms TimeCoverageRelationStatistics Valid=630, Invalid=2022, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:41:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10302 states. [2021-10-13 22:41:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10302 to 6578. [2021-10-13 22:41:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6578 states, 6577 states have (on average 2.7596168465865896) internal successors, (18150), 6577 states have internal predecessors, (18150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6578 states to 6578 states and 18150 transitions. [2021-10-13 22:41:26,072 INFO L78 Accepts]: Start accepts. Automaton has 6578 states and 18150 transitions. Word has length 67 [2021-10-13 22:41:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:26,072 INFO L470 AbstractCegarLoop]: Abstraction has 6578 states and 18150 transitions. [2021-10-13 22:41:26,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6578 states and 18150 transitions. [2021-10-13 22:41:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:26,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:26,078 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:26,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:26,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:26,287 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:26,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:26,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1798438605, now seen corresponding path program 95 times [2021-10-13 22:41:26,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:26,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142722095] [2021-10-13 22:41:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:26,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:26,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:26,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142722095] [2021-10-13 22:41:26,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142722095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:26,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024177772] [2021-10-13 22:41:26,498 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:41:26,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:26,506 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:26,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-13 22:41:32,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:41:32,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:32,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:32,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:32,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024177772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:32,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:32,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:32,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458582921] [2021-10-13 22:41:32,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:32,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:32,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:32,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:32,688 INFO L87 Difference]: Start difference. First operand 6578 states and 18150 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:33,536 INFO L93 Difference]: Finished difference Result 12143 states and 32358 transitions. [2021-10-13 22:41:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:41:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:33,553 INFO L225 Difference]: With dead ends: 12143 [2021-10-13 22:41:33,553 INFO L226 Difference]: Without dead ends: 11991 [2021-10-13 22:41:33,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 779.4ms TimeCoverageRelationStatistics Valid=750, Invalid=2330, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:41:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11991 states. [2021-10-13 22:41:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11991 to 6818. [2021-10-13 22:41:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6818 states, 6817 states have (on average 2.772480563297638) internal successors, (18900), 6817 states have internal predecessors, (18900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6818 states to 6818 states and 18900 transitions. [2021-10-13 22:41:33,661 INFO L78 Accepts]: Start accepts. Automaton has 6818 states and 18900 transitions. Word has length 67 [2021-10-13 22:41:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:33,661 INFO L470 AbstractCegarLoop]: Abstraction has 6818 states and 18900 transitions. [2021-10-13 22:41:33,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6818 states and 18900 transitions. [2021-10-13 22:41:33,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:33,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:33,668 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:33,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:33,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:33,868 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash -521385391, now seen corresponding path program 96 times [2021-10-13 22:41:33,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:33,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5734746] [2021-10-13 22:41:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:33,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:34,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:34,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5734746] [2021-10-13 22:41:34,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5734746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:34,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127668555] [2021-10-13 22:41:34,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:41:34,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:34,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:34,085 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:34,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-13 22:41:39,830 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:41:39,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:39,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:39,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:40,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127668555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:40,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:40,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:40,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035889348] [2021-10-13 22:41:40,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:40,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:40,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:40,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:40,336 INFO L87 Difference]: Start difference. First operand 6818 states and 18900 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:41,508 INFO L93 Difference]: Finished difference Result 14976 states and 39929 transitions. [2021-10-13 22:41:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 22:41:41,508 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:41,529 INFO L225 Difference]: With dead ends: 14976 [2021-10-13 22:41:41,529 INFO L226 Difference]: Without dead ends: 14418 [2021-10-13 22:41:41,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 1049.9ms TimeCoverageRelationStatistics Valid=1110, Invalid=3720, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 22:41:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14418 states. [2021-10-13 22:41:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 6388. [2021-10-13 22:41:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 6387 states have (on average 2.7555973070299045) internal successors, (17600), 6387 states have internal predecessors, (17600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 17600 transitions. [2021-10-13 22:41:41,642 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 17600 transitions. Word has length 67 [2021-10-13 22:41:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:41,642 INFO L470 AbstractCegarLoop]: Abstraction has 6388 states and 17600 transitions. [2021-10-13 22:41:41,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 17600 transitions. [2021-10-13 22:41:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:41,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:41,648 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:41,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:41,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:41,863 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1433107623, now seen corresponding path program 97 times [2021-10-13 22:41:41,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:41,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107574002] [2021-10-13 22:41:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:41,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:41,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:41,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107574002] [2021-10-13 22:41:41,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107574002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:41,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731031112] [2021-10-13 22:41:41,983 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:41:41,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:41,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:41,984 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:41,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-13 22:41:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:47,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:47,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:48,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731031112] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:48,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:48,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:48,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042740413] [2021-10-13 22:41:48,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:48,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:48,440 INFO L87 Difference]: Start difference. First operand 6388 states and 17600 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:49,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:49,211 INFO L93 Difference]: Finished difference Result 11937 states and 31651 transitions. [2021-10-13 22:41:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 22:41:49,212 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:49,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:49,227 INFO L225 Difference]: With dead ends: 11937 [2021-10-13 22:41:49,227 INFO L226 Difference]: Without dead ends: 11785 [2021-10-13 22:41:49,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 709.3ms TimeCoverageRelationStatistics Valid=653, Invalid=2103, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:41:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2021-10-13 22:41:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 6623. [2021-10-13 22:41:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 6622 states have (on average 2.772576260948354) internal successors, (18360), 6622 states have internal predecessors, (18360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 18360 transitions. [2021-10-13 22:41:49,330 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 18360 transitions. Word has length 67 [2021-10-13 22:41:49,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:49,330 INFO L470 AbstractCegarLoop]: Abstraction has 6623 states and 18360 transitions. [2021-10-13 22:41:49,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 18360 transitions. [2021-10-13 22:41:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:49,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:49,336 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:49,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:49,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-10-13 22:41:49,559 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:49,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:49,560 INFO L82 PathProgramCache]: Analyzing trace with hash 542035677, now seen corresponding path program 98 times [2021-10-13 22:41:49,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:49,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770838622] [2021-10-13 22:41:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:49,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:49,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:49,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770838622] [2021-10-13 22:41:49,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770838622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:49,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106303062] [2021-10-13 22:41:49,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:41:49,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:49,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:49,681 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:49,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-13 22:41:55,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:41:55,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:55,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:55,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:56,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106303062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:56,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:56,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:56,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677575596] [2021-10-13 22:41:56,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:56,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:56,165 INFO L87 Difference]: Start difference. First operand 6623 states and 18360 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:57,149 INFO L93 Difference]: Finished difference Result 14801 states and 39492 transitions. [2021-10-13 22:41:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 22:41:57,149 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:57,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:57,169 INFO L225 Difference]: With dead ends: 14801 [2021-10-13 22:41:57,169 INFO L226 Difference]: Without dead ends: 14243 [2021-10-13 22:41:57,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 915.2ms TimeCoverageRelationStatistics Valid=1048, Invalid=3782, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 22:41:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14243 states. [2021-10-13 22:41:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14243 to 6163. [2021-10-13 22:41:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6163 states, 6162 states have (on average 2.7466731580655632) internal successors, (16925), 6162 states have internal predecessors, (16925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6163 states to 6163 states and 16925 transitions. [2021-10-13 22:41:57,335 INFO L78 Accepts]: Start accepts. Automaton has 6163 states and 16925 transitions. Word has length 67 [2021-10-13 22:41:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:57,335 INFO L470 AbstractCegarLoop]: Abstraction has 6163 states and 16925 transitions. [2021-10-13 22:41:57,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6163 states and 16925 transitions. [2021-10-13 22:41:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:57,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:57,340 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:57,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:57,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-13 22:41:57,559 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:57,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1724786699, now seen corresponding path program 99 times [2021-10-13 22:41:57,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:57,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075003314] [2021-10-13 22:41:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:57,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:57,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:57,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075003314] [2021-10-13 22:41:57,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075003314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:57,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001789802] [2021-10-13 22:41:57,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:41:57,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:57,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:57,650 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:57,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-10-13 22:42:03,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:42:03,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:03,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:42:03,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:03,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001789802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:03,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:03,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2021-10-13 22:42:03,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498224596] [2021-10-13 22:42:03,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:42:03,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:42:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:42:03,856 INFO L87 Difference]: Start difference. First operand 6163 states and 16925 transitions. Second operand has 21 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:04,414 INFO L93 Difference]: Finished difference Result 12070 states and 31682 transitions. [2021-10-13 22:42:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 22:42:04,414 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:42:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:04,430 INFO L225 Difference]: With dead ends: 12070 [2021-10-13 22:42:04,431 INFO L226 Difference]: Without dead ends: 11918 [2021-10-13 22:42:04,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 454.1ms TimeCoverageRelationStatistics Valid=653, Invalid=2427, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:42:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11918 states. [2021-10-13 22:42:04,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11918 to 6883. [2021-10-13 22:42:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 6882 states have (on average 2.7971519907003777) internal successors, (19250), 6882 states have internal predecessors, (19250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 19250 transitions. [2021-10-13 22:42:04,685 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 19250 transitions. Word has length 67 [2021-10-13 22:42:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:04,686 INFO L470 AbstractCegarLoop]: Abstraction has 6883 states and 19250 transitions. [2021-10-13 22:42:04,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:04,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 19250 transitions. [2021-10-13 22:42:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:42:04,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:04,692 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:04,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2021-10-13 22:42:04,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-10-13 22:42:04,901 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:04,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:04,902 INFO L82 PathProgramCache]: Analyzing trace with hash -595037297, now seen corresponding path program 100 times [2021-10-13 22:42:04,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:04,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647790595] [2021-10-13 22:42:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:04,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:05,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:05,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647790595] [2021-10-13 22:42:05,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647790595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:05,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106980804] [2021-10-13 22:42:05,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:42:05,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:05,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:05,135 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:05,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-10-13 22:42:10,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:42:10,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:10,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:42:10,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:11,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106980804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:11,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:11,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:42:11,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063799968] [2021-10-13 22:42:11,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:42:11,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:42:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:42:11,399 INFO L87 Difference]: Start difference. First operand 6883 states and 19250 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:12,407 INFO L93 Difference]: Finished difference Result 16074 states and 43058 transitions. [2021-10-13 22:42:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-13 22:42:12,408 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:42:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:12,430 INFO L225 Difference]: With dead ends: 16074 [2021-10-13 22:42:12,430 INFO L226 Difference]: Without dead ends: 15516 [2021-10-13 22:42:12,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 917.7ms TimeCoverageRelationStatistics Valid=1180, Invalid=4370, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 22:42:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15516 states. [2021-10-13 22:42:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15516 to 6663. [2021-10-13 22:42:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6663 states, 6662 states have (on average 2.7731912338637046) internal successors, (18475), 6662 states have internal predecessors, (18475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6663 states to 6663 states and 18475 transitions. [2021-10-13 22:42:12,558 INFO L78 Accepts]: Start accepts. Automaton has 6663 states and 18475 transitions. Word has length 67 [2021-10-13 22:42:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:12,558 INFO L470 AbstractCegarLoop]: Abstraction has 6663 states and 18475 transitions. [2021-10-13 22:42:12,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6663 states and 18475 transitions. [2021-10-13 22:42:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:42:12,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:12,564 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:12,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:12,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:12,791 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:12,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:12,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1112116435, now seen corresponding path program 101 times [2021-10-13 22:42:12,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:12,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910263012] [2021-10-13 22:42:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:12,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:12,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:12,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910263012] [2021-10-13 22:42:12,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910263012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:12,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878371482] [2021-10-13 22:42:12,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:42:12,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:12,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:12,921 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:12,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2021-10-13 22:42:18,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:42:18,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:18,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:42:18,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:19,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878371482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:19,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:19,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:42:19,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707232961] [2021-10-13 22:42:19,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:42:19,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:19,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:42:19,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:42:19,097 INFO L87 Difference]: Start difference. First operand 6663 states and 18475 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:19,541 INFO L93 Difference]: Finished difference Result 11249 states and 28995 transitions. [2021-10-13 22:42:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 22:42:19,542 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:42:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:19,556 INFO L225 Difference]: With dead ends: 11249 [2021-10-13 22:42:19,556 INFO L226 Difference]: Without dead ends: 11097 [2021-10-13 22:42:19,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 417.6ms TimeCoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:42:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11097 states. [2021-10-13 22:42:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11097 to 7108. [2021-10-13 22:42:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 7107 states have (on average 2.7909103700576896) internal successors, (19835), 7107 states have internal predecessors, (19835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:19,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 19835 transitions. [2021-10-13 22:42:19,720 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 19835 transitions. Word has length 67 [2021-10-13 22:42:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:19,721 INFO L470 AbstractCegarLoop]: Abstraction has 7108 states and 19835 transitions. [2021-10-13 22:42:19,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:19,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 19835 transitions. [2021-10-13 22:42:19,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:42:19,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:19,726 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:19,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:19,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-10-13 22:42:19,939 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:19,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:19,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1331994023, now seen corresponding path program 102 times [2021-10-13 22:42:19,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:19,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608842718] [2021-10-13 22:42:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:19,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:20,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:20,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608842718] [2021-10-13 22:42:20,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608842718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:20,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008489358] [2021-10-13 22:42:20,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:42:20,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:20,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:20,193 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:20,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2021-10-13 22:42:26,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:42:26,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:26,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:42:26,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:31,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008489358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:31,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:31,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:42:31,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396608139] [2021-10-13 22:42:31,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:42:31,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:42:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=405, Unknown=1, NotChecked=0, Total=506 [2021-10-13 22:42:31,907 INFO L87 Difference]: Start difference. First operand 7108 states and 19835 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-13 22:45:25,432 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 22:45:25,445 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 22:45:26,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2021-10-13 22:45:26,647 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-13 22:45:26,668 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:45:26,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-10-13 22:45:26,669 WARN L594 AbstractCegarLoop]: Verification canceled: while executing Executor. [2021-10-13 22:45:26,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:45:26,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 22:45:26,672 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 22:45:26,673 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 22:45:26,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:45:26 BasicIcfg [2021-10-13 22:45:26,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 22:45:26,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2021-10-13 22:45:26,685 INFO L168 Benchmark]: Toolchain (without parser) took 891031.23 ms. Allocated memory was 203.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 146.3 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 282.5 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:26,685 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 203.4 MB. Free memory was 164.5 MB in the beginning and 164.3 MB in the end (delta: 129.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:45:26,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.98 ms. Allocated memory was 203.4 MB in the beginning and 289.4 MB in the end (delta: 86.0 MB). Free memory was 146.1 MB in the beginning and 252.7 MB in the end (delta: -106.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:26,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.50 ms. Allocated memory is still 289.4 MB. Free memory was 252.7 MB in the beginning and 251.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:26,686 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 ms. Allocated memory is still 289.4 MB. Free memory was 251.1 MB in the beginning and 249.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:26,686 INFO L168 Benchmark]: RCFGBuilder took 381.63 ms. Allocated memory is still 289.4 MB. Free memory was 249.6 MB in the beginning and 238.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:26,686 INFO L168 Benchmark]: TraceAbstraction took 890150.00 ms. Allocated memory was 289.4 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 237.5 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 287.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:26,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 203.4 MB. Free memory was 164.5 MB in the beginning and 164.3 MB in the end (delta: 129.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 424.98 ms. Allocated memory was 203.4 MB in the beginning and 289.4 MB in the end (delta: 86.0 MB). Free memory was 146.1 MB in the beginning and 252.7 MB in the end (delta: -106.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.50 ms. Allocated memory is still 289.4 MB. Free memory was 252.7 MB in the beginning and 251.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.99 ms. Allocated memory is still 289.4 MB. Free memory was 251.1 MB in the beginning and 249.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 381.63 ms. Allocated memory is still 289.4 MB. Free memory was 249.6 MB in the beginning and 238.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 890150.00 ms. Allocated memory was 289.4 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 237.5 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 287.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 723]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 890034.9ms, OverallIterations: 140, TraceHistogramMax: 6, EmptinessCheckTime: 669.2ms, AutomataDifference: 397158.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 84.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12921 SDtfs, 120926 SDslu, 151483 SDs, 0 SdLazy, 25434 SolverSat, 9072 SolverUnsat, 95 SolverUnknown, 0 SolverNotchecked, 200521.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12813 GetRequests, 7116 SyntacticMatches, 22 SemanticMatches, 5675 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81097 ImplicationChecksByTransitivity, 205916.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7108occurred in iteration=139, InterpolantAutomatonStates: 4659, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11259.1ms AutomataMinimizationTime, 139 MinimizatonAttempts, 376911 StatesRemovedByMinimization, 139 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1091.4ms SsaConstructionTime, 2900.4ms SatisfiabilityAnalysisTime, 72321.2ms InterpolantComputationTime, 16531 NumberOfCodeBlocks, 16531 NumberOfCodeBlocksAsserted, 520 NumberOfCheckSat, 16258 ConstructedInterpolants, 7 QuantifiedInterpolants, 136571 SizeOfPredicates, 266 NumberOfNonLiveVariables, 20289 ConjunctsInSsa, 1727 ConjunctsInUnsatCore, 273 InterpolantComputations, 7 PerfectInterpolantSequences, 0/6198 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown