/usr/bin/java -Xmx16000000000 -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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-04 21:12:29,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-04 21:12:29,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-04 21:12:29,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-04 21:12:29,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-04 21:12:29,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-04 21:12:29,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-04 21:12:29,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-04 21:12:29,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-04 21:12:29,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-04 21:12:29,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-04 21:12:29,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-04 21:12:29,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-04 21:12:29,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-04 21:12:29,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-04 21:12:29,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-04 21:12:29,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-04 21:12:29,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-04 21:12:29,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-04 21:12:29,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-04 21:12:29,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-04 21:12:29,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-04 21:12:29,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-04 21:12:29,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-04 21:12:29,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-04 21:12:29,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-04 21:12:29,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-04 21:12:29,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-04 21:12:29,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-04 21:12:29,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-04 21:12:29,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-04 21:12:29,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-04 21:12:29,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-04 21:12:29,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-04 21:12:29,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-04 21:12:29,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-04 21:12:29,120 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 [2021-06-04 21:12:29,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-04 21:12:29,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-04 21:12:29,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-04 21:12:29,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-04 21:12:29,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-04 21:12:29,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-04 21:12:29,150 INFO L138 SettingsManager]: * Use SBE=true [2021-06-04 21:12:29,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-04 21:12:29,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-04 21:12:29,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-04 21:12:29,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-04 21:12:29,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-04 21:12:29,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-04 21:12:29,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-04 21:12:29,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-04 21:12:29,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-04 21:12:29,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-04 21:12:29,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-04 21:12:29,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-04 21:12:29,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-04 21:12:29,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-04 21:12:29,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-04 21:12:29,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-04 21:12:29,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-04 21:12:29,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-04 21:12:29,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-04 21:12:29,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-04 21:12:29,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-04 21:12:29,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-04 21:12:29,153 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-04 21:12:29,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-04 21:12:29,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-04 21:12:29,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-04 21:12:29,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-04 21:12:29,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-04 21:12:29,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-04 21:12:29,390 INFO L275 PluginConnector]: CDTParser initialized [2021-06-04 21:12:29,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2021-06-04 21:12:29,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ee30521/74d2a08061f041faacff447c5588e432/FLAG57b482bc6 [2021-06-04 21:12:29,838 INFO L306 CDTParser]: Found 1 translation units. [2021-06-04 21:12:29,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2021-06-04 21:12:29,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ee30521/74d2a08061f041faacff447c5588e432/FLAG57b482bc6 [2021-06-04 21:12:29,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ee30521/74d2a08061f041faacff447c5588e432 [2021-06-04 21:12:29,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-04 21:12:29,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-04 21:12:29,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-04 21:12:29,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-04 21:12:29,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-04 21:12:29,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 09:12:29" (1/1) ... [2021-06-04 21:12:29,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23299b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:29, skipping insertion in model container [2021-06-04 21:12:29,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 09:12:29" (1/1) ... [2021-06-04 21:12:29,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-04 21:12:29,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-04 21:12:30,191 WARN L224 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-1.i[30286,30299] [2021-06-04 21:12:30,201 WARN L224 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-1.i[31038,31051] [2021-06-04 21:12:30,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-04 21:12:30,208 INFO L203 MainTranslator]: Completed pre-run [2021-06-04 21:12:30,228 WARN L224 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-1.i[30286,30299] [2021-06-04 21:12:30,231 WARN L224 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-1.i[31038,31051] [2021-06-04 21:12:30,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-04 21:12:30,269 INFO L208 MainTranslator]: Completed translation [2021-06-04 21:12:30,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30 WrapperNode [2021-06-04 21:12:30,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-04 21:12:30,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-04 21:12:30,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-04 21:12:30,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-04 21:12:30,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-04 21:12:30,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-04 21:12:30,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-04 21:12:30,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-04 21:12:30,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-04 21:12:30,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-04 21:12:30,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-04 21:12:30,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-04 21:12:30,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-04 21:12:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-04 21:12:30,382 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-04 21:12:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-04 21:12:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-04 21:12:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-04 21:12:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-04 21:12:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-04 21:12:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-04 21:12:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-04 21:12:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-04 21:12:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-04 21:12:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-04 21:12:30,386 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-04 21:12:30,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-04 21:12:30,710 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-04 21:12:30,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 09:12:30 BoogieIcfgContainer [2021-06-04 21:12:30,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-04 21:12:30,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-04 21:12:30,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-04 21:12:30,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-04 21:12:30,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 09:12:29" (1/3) ... [2021-06-04 21:12:30,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3aea9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 09:12:30, skipping insertion in model container [2021-06-04 21:12:30,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30" (2/3) ... [2021-06-04 21:12:30,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3aea9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 09:12:30, skipping insertion in model container [2021-06-04 21:12:30,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 09:12:30" (3/3) ... [2021-06-04 21:12:30,717 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-1.i [2021-06-04 21:12:30,721 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-04 21:12:30,721 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-04 21:12:30,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-04 21:12:30,722 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-04 21:12:30,745 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,746 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,746 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,746 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,751 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,752 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,752 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,752 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,752 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,752 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,754 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,754 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,756 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,756 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,756 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,757 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,757 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,757 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,759 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,759 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,770 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,771 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,771 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:30,772 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-04 21:12:30,787 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-04 21:12:30,808 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-04 21:12:30,808 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-04 21:12:30,808 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-04 21:12:30,808 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-04 21:12:30,808 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-04 21:12:30,808 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-04 21:12:30,809 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-04 21:12:30,809 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-04 21:12:30,817 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-06-04 21:12:30,898 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-04 21:12:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-04 21:12:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-04 21:12:30,912 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:30,912 INFO L521 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] [2021-06-04 21:12:30,913 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:30,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1746009969, now seen corresponding path program 1 times [2021-06-04 21:12:30,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:30,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690388913] [2021-06-04 21:12:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:31,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:31,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690388913] [2021-06-04 21:12:31,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690388913] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:31,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:31,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-04 21:12:31,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241835307] [2021-06-04 21:12:31,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-04 21:12:31,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:31,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-04 21:12:31,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-04 21:12:31,236 INFO L87 Difference]: Start difference. First operand has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 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) [2021-06-04 21:12:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:31,393 INFO L93 Difference]: Finished difference Result 3996 states and 11572 transitions. [2021-06-04 21:12:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-04 21:12:31,395 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 [2021-06-04 21:12:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:31,414 INFO L225 Difference]: With dead ends: 3996 [2021-06-04 21:12:31,414 INFO L226 Difference]: Without dead ends: 1425 [2021-06-04 21:12:31,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-04 21:12:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-06-04 21:12:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-06-04 21:12:31,500 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) [2021-06-04 21:12:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-06-04 21:12:31,504 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-06-04 21:12:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:31,504 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-06-04 21:12:31,504 INFO L483 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) [2021-06-04 21:12:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-06-04 21:12:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-04 21:12:31,510 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:31,510 INFO L521 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] [2021-06-04 21:12:31,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-04 21:12:31,511 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:31,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1710770003, now seen corresponding path program 1 times [2021-06-04 21:12:31,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:31,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549926972] [2021-06-04 21:12:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:31,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:31,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549926972] [2021-06-04 21:12:31,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549926972] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:31,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:31,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-04 21:12:31,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785145564] [2021-06-04 21:12:31,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-04 21:12:31,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:31,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-04 21:12:31,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-04 21:12:31,633 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) [2021-06-04 21:12:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:31,721 INFO L93 Difference]: Finished difference Result 2001 states and 5364 transitions. [2021-06-04 21:12:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-04 21:12:31,722 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 [2021-06-04 21:12:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:31,728 INFO L225 Difference]: With dead ends: 2001 [2021-06-04 21:12:31,728 INFO L226 Difference]: Without dead ends: 1670 [2021-06-04 21:12:31,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-06-04 21:12:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-06-04 21:12:31,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1304. [2021-06-04 21:12:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 2.7206446661550268) internal successors, (3545), 1303 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-04 21:12:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 3545 transitions. [2021-06-04 21:12:31,760 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 3545 transitions. Word has length 37 [2021-06-04 21:12:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:31,761 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 3545 transitions. [2021-06-04 21:12:31,761 INFO L483 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) [2021-06-04 21:12:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 3545 transitions. [2021-06-04 21:12:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-04 21:12:31,762 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:31,762 INFO L521 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] [2021-06-04 21:12:31,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-04 21:12:31,763 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:31,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:31,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1013654691, now seen corresponding path program 1 times [2021-06-04 21:12:31,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:31,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608805806] [2021-06-04 21:12:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:31,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:31,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608805806] [2021-06-04 21:12:31,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608805806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:31,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:31,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-04 21:12:31,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813385448] [2021-06-04 21:12:31,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-04 21:12:31,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:31,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-04 21:12:31,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-04 21:12:31,865 INFO L87 Difference]: Start difference. First operand 1304 states and 3545 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) [2021-06-04 21:12:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:31,936 INFO L93 Difference]: Finished difference Result 2270 states and 6052 transitions. [2021-06-04 21:12:31,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-04 21:12:31,936 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 [2021-06-04 21:12:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:31,943 INFO L225 Difference]: With dead ends: 2270 [2021-06-04 21:12:31,943 INFO L226 Difference]: Without dead ends: 2003 [2021-06-04 21:12:31,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 80.4ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-04 21:12:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-06-04 21:12:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1514. [2021-06-04 21:12:31,969 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) [2021-06-04 21:12:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-06-04 21:12:31,973 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-06-04 21:12:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:31,973 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-06-04 21:12:31,973 INFO L483 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) [2021-06-04 21:12:31,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-06-04 21:12:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-04 21:12:31,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:31,975 INFO L521 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] [2021-06-04 21:12:31,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-04 21:12:31,975 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:31,976 INFO L82 PathProgramCache]: Analyzing trace with hash 244026397, now seen corresponding path program 1 times [2021-06-04 21:12:31,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:31,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569508844] [2021-06-04 21:12:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:32,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:32,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569508844] [2021-06-04 21:12:32,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569508844] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:32,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:32,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-04 21:12:32,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959309082] [2021-06-04 21:12:32,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-04 21:12:32,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-04 21:12:32,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-04 21:12:32,038 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) [2021-06-04 21:12:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:32,128 INFO L93 Difference]: Finished difference Result 2443 states and 6548 transitions. [2021-06-04 21:12:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-04 21:12:32,128 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 [2021-06-04 21:12:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:32,135 INFO L225 Difference]: With dead ends: 2443 [2021-06-04 21:12:32,135 INFO L226 Difference]: Without dead ends: 2176 [2021-06-04 21:12:32,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-04 21:12:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-06-04 21:12:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1544. [2021-06-04 21:12:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 2.73298768632534) internal successors, (4217), 1543 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-04 21:12:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 4217 transitions. [2021-06-04 21:12:32,165 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 4217 transitions. Word has length 42 [2021-06-04 21:12:32,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:32,165 INFO L482 AbstractCegarLoop]: Abstraction has 1544 states and 4217 transitions. [2021-06-04 21:12:32,165 INFO L483 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) [2021-06-04 21:12:32,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 4217 transitions. [2021-06-04 21:12:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-04 21:12:32,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:32,167 INFO L521 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] [2021-06-04 21:12:32,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-04 21:12:32,167 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:32,168 INFO L82 PathProgramCache]: Analyzing trace with hash 730868611, now seen corresponding path program 2 times [2021-06-04 21:12:32,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:32,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068994339] [2021-06-04 21:12:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:32,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:32,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068994339] [2021-06-04 21:12:32,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068994339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:32,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:32,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-04 21:12:32,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999810492] [2021-06-04 21:12:32,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-04 21:12:32,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:32,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-04 21:12:32,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-04 21:12:32,245 INFO L87 Difference]: Start difference. First operand 1544 states and 4217 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) [2021-06-04 21:12:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:32,374 INFO L93 Difference]: Finished difference Result 2880 states and 7692 transitions. [2021-06-04 21:12:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-04 21:12:32,374 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 [2021-06-04 21:12:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:32,383 INFO L225 Difference]: With dead ends: 2880 [2021-06-04 21:12:32,383 INFO L226 Difference]: Without dead ends: 2565 [2021-06-04 21:12:32,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-04 21:12:32,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2021-06-04 21:12:32,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 1746. [2021-06-04 21:12:32,422 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) [2021-06-04 21:12:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 4761 transitions. [2021-06-04 21:12:32,427 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 4761 transitions. Word has length 42 [2021-06-04 21:12:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:32,427 INFO L482 AbstractCegarLoop]: Abstraction has 1746 states and 4761 transitions. [2021-06-04 21:12:32,427 INFO L483 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) [2021-06-04 21:12:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 4761 transitions. [2021-06-04 21:12:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-04 21:12:32,429 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:32,429 INFO L521 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] [2021-06-04 21:12:32,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-04 21:12:32,430 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash -502364404, now seen corresponding path program 1 times [2021-06-04 21:12:32,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:32,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167227478] [2021-06-04 21:12:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:32,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:32,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167227478] [2021-06-04 21:12:32,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167227478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:32,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277900275] [2021-06-04 21:12:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-04 21:12:32,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:32,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277900275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:32,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:32,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-04 21:12:32,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195681286] [2021-06-04 21:12:32,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-04 21:12:32,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:32,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-04 21:12:32,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-04 21:12:32,876 INFO L87 Difference]: Start difference. First operand 1746 states and 4761 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) [2021-06-04 21:12:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:33,069 INFO L93 Difference]: Finished difference Result 3320 states and 8844 transitions. [2021-06-04 21:12:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-04 21:12:33,069 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 [2021-06-04 21:12:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:33,079 INFO L225 Difference]: With dead ends: 3320 [2021-06-04 21:12:33,079 INFO L226 Difference]: Without dead ends: 2786 [2021-06-04 21:12:33,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 174.3ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-04 21:12:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-06-04 21:12:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2113. [2021-06-04 21:12:33,124 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) [2021-06-04 21:12:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5730 transitions. [2021-06-04 21:12:33,138 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5730 transitions. Word has length 42 [2021-06-04 21:12:33,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:33,139 INFO L482 AbstractCegarLoop]: Abstraction has 2113 states and 5730 transitions. [2021-06-04 21:12:33,139 INFO L483 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) [2021-06-04 21:12:33,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5730 transitions. [2021-06-04 21:12:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-04 21:12:33,142 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:33,142 INFO L521 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] [2021-06-04 21:12:33,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-04 21:12:33,360 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:33,361 INFO L82 PathProgramCache]: Analyzing trace with hash 287612470, now seen corresponding path program 1 times [2021-06-04 21:12:33,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:33,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955072124] [2021-06-04 21:12:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:33,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:33,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955072124] [2021-06-04 21:12:33,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955072124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:33,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550596613] [2021-06-04 21:12:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:33,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-04 21:12:33,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:33,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550596613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:33,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:33,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-04 21:12:33,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54484184] [2021-06-04 21:12:33,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-04 21:12:33,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:33,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-04 21:12:33,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-04 21:12:33,723 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) [2021-06-04 21:12:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:34,051 INFO L93 Difference]: Finished difference Result 4087 states and 10892 transitions. [2021-06-04 21:12:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-04 21:12:34,052 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 [2021-06-04 21:12:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:34,064 INFO L225 Difference]: With dead ends: 4087 [2021-06-04 21:12:34,064 INFO L226 Difference]: Without dead ends: 3529 [2021-06-04 21:12:34,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 275.6ms TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2021-06-04 21:12:34,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-06-04 21:12:34,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2150. [2021-06-04 21:12:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 2.7240577012563985) internal successors, (5854), 2149 states have internal predecessors, (5854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-04 21:12:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 5854 transitions. [2021-06-04 21:12:34,111 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 5854 transitions. Word has length 47 [2021-06-04 21:12:34,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:34,111 INFO L482 AbstractCegarLoop]: Abstraction has 2150 states and 5854 transitions. [2021-06-04 21:12:34,111 INFO L483 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) [2021-06-04 21:12:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 5854 transitions. [2021-06-04 21:12:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-04 21:12:34,114 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:34,114 INFO L521 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] [2021-06-04 21:12:34,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:34,329 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash -81106442, now seen corresponding path program 2 times [2021-06-04 21:12:34,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:34,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735611935] [2021-06-04 21:12:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:34,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:34,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735611935] [2021-06-04 21:12:34,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735611935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:34,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831690399] [2021-06-04 21:12:34,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:34,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-04 21:12:34,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-04 21:12:34,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-04 21:12:34,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:34,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831690399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:34,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:34,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-04 21:12:34,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208452488] [2021-06-04 21:12:34,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-04 21:12:34,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:34,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-04 21:12:34,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-04 21:12:34,647 INFO L87 Difference]: Start difference. First operand 2150 states and 5854 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) [2021-06-04 21:12:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:35,142 INFO L93 Difference]: Finished difference Result 5683 states and 15052 transitions. [2021-06-04 21:12:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-04 21:12:35,142 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 [2021-06-04 21:12:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:35,152 INFO L225 Difference]: With dead ends: 5683 [2021-06-04 21:12:35,152 INFO L226 Difference]: Without dead ends: 4810 [2021-06-04 21:12:35,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 418.8ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-06-04 21:12:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-06-04 21:12:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 2817. [2021-06-04 21:12:35,209 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) [2021-06-04 21:12:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-06-04 21:12:35,215 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-06-04 21:12:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:35,215 INFO L482 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-06-04 21:12:35,215 INFO L483 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) [2021-06-04 21:12:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-06-04 21:12:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-04 21:12:35,219 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:35,219 INFO L521 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] [2021-06-04 21:12:35,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-04 21:12:35,433 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:35,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1844068483, now seen corresponding path program 3 times [2021-06-04 21:12:35,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:35,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167110300] [2021-06-04 21:12:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:35,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:35,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167110300] [2021-06-04 21:12:35,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167110300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:35,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994648301] [2021-06-04 21:12:35,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:35,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-04 21:12:35,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-04 21:12:35,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-04 21:12:35,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:35,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994648301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:35,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:35,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-04 21:12:35,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467273009] [2021-06-04 21:12:35,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-04 21:12:35,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:35,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-04 21:12:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-04 21:12:35,759 INFO L87 Difference]: Start difference. First operand 2817 states and 7651 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) [2021-06-04 21:12:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:36,230 INFO L93 Difference]: Finished difference Result 6066 states and 16356 transitions. [2021-06-04 21:12:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-04 21:12:36,231 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 [2021-06-04 21:12:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:36,244 INFO L225 Difference]: With dead ends: 6066 [2021-06-04 21:12:36,244 INFO L226 Difference]: Without dead ends: 5390 [2021-06-04 21:12:36,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 411.5ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-06-04 21:12:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2021-06-04 21:12:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 3186. [2021-06-04 21:12:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3185 states have (on average 2.778335949764521) internal successors, (8849), 3185 states have internal predecessors, (8849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-04 21:12:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 8849 transitions. [2021-06-04 21:12:36,319 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 8849 transitions. Word has length 52 [2021-06-04 21:12:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:36,319 INFO L482 AbstractCegarLoop]: Abstraction has 3186 states and 8849 transitions. [2021-06-04 21:12:36,319 INFO L483 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) [2021-06-04 21:12:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 8849 transitions. [2021-06-04 21:12:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-04 21:12:36,323 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:36,323 INFO L521 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] [2021-06-04 21:12:36,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:36,540 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:36,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:36,540 INFO L82 PathProgramCache]: Analyzing trace with hash 292564843, now seen corresponding path program 1 times [2021-06-04 21:12:36,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:36,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012220324] [2021-06-04 21:12:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:36,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:36,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012220324] [2021-06-04 21:12:36,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012220324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:36,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731292877] [2021-06-04 21:12:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:36,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-04 21:12:36,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:36,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731292877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:36,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:36,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-04 21:12:36,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124981137] [2021-06-04 21:12:36,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-04 21:12:36,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:36,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-04 21:12:36,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-06-04 21:12:36,872 INFO L87 Difference]: Start difference. First operand 3186 states and 8849 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) [2021-06-04 21:12:37,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:37,409 INFO L93 Difference]: Finished difference Result 6755 states and 18323 transitions. [2021-06-04 21:12:37,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-04 21:12:37,409 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 [2021-06-04 21:12:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:37,421 INFO L225 Difference]: With dead ends: 6755 [2021-06-04 21:12:37,421 INFO L226 Difference]: Without dead ends: 6325 [2021-06-04 21:12:37,422 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 462.8ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-06-04 21:12:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-06-04 21:12:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 3417. [2021-06-04 21:12:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 2.768735362997658) internal successors, (9458), 3416 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-04 21:12:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-06-04 21:12:37,499 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 52 [2021-06-04 21:12:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:37,499 INFO L482 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-06-04 21:12:37,499 INFO L483 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) [2021-06-04 21:12:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-06-04 21:12:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-04 21:12:37,504 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:37,504 INFO L521 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] [2021-06-04 21:12:37,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-04 21:12:37,720 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:37,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1152083460, now seen corresponding path program 4 times [2021-06-04 21:12:37,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:37,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680606497] [2021-06-04 21:12:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:12:37,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:37,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680606497] [2021-06-04 21:12:37,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680606497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:37,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613770053] [2021-06-04 21:12:37,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:37,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-04 21:12:37,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-04 21:12:37,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-04 21:12:37,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-06-04 21:27:15,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-04 21:27:15,561 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-04 21:27:15,562 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-04 21:27:15,563 WARN L196 ceAbstractionStarter]: Timeout [2021-06-04 21:27:15,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 09:27:15 BasicIcfg [2021-06-04 21:27:15,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-04 21:27:15,564 INFO L168 Benchmark]: Toolchain (without parser) took 885693.46 ms. Allocated memory was 373.3 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 335.6 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 988.6 MB. Max. memory is 16.0 GB. [2021-06-04 21:27:15,564 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 373.3 MB. Free memory was 353.6 MB in the beginning and 353.5 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-04 21:27:15,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.85 ms. Allocated memory is still 373.3 MB. Free memory was 335.5 MB in the beginning and 336.5 MB in the end (delta: -1.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-04 21:27:15,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.83 ms. Allocated memory is still 373.3 MB. Free memory was 336.5 MB in the beginning and 335.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-04 21:27:15,565 INFO L168 Benchmark]: Boogie Preprocessor took 31.50 ms. Allocated memory is still 373.3 MB. Free memory was 335.5 MB in the beginning and 333.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-04 21:27:15,565 INFO L168 Benchmark]: RCFGBuilder took 381.58 ms. Allocated memory is still 373.3 MB. Free memory was 333.4 MB in the beginning and 311.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-04 21:27:15,565 INFO L168 Benchmark]: TraceAbstraction took 884851.10 ms. Allocated memory was 373.3 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 310.3 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 962.8 MB. Max. memory is 16.0 GB. [2021-06-04 21:27:15,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 373.3 MB. Free memory was 353.6 MB in the beginning and 353.5 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 396.85 ms. Allocated memory is still 373.3 MB. Free memory was 335.5 MB in the beginning and 336.5 MB in the end (delta: -1.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.83 ms. Allocated memory is still 373.3 MB. Free memory was 336.5 MB in the beginning and 335.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.50 ms. Allocated memory is still 373.3 MB. Free memory was 335.5 MB in the beginning and 333.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 381.58 ms. Allocated memory is still 373.3 MB. Free memory was 333.4 MB in the beginning and 311.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 884851.10 ms. Allocated memory was 373.3 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 310.3 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 962.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 BasicCegarLoop was analyzing trace of length 58 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - 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 BasicCegarLoop was analyzing trace of length 58 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 58 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 884755.1ms, OverallIterations: 11, TraceHistogramMax: 4, EmptinessCheckTime: 41.6ms, AutomataDifference: 2693.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 89.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 962 SDtfs, 4778 SDslu, 6033 SDs, 0 SdLazy, 992 SolverSat, 253 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 546.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 451 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 2106.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3417occurred in iteration=10, InterpolantAutomatonStates: 214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 529.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 11768 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 118.8ms SsaConstructionTime, 200.3ms SatisfiabilityAnalysisTime, 1765.6ms InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 655 ConstructedInterpolants, 0 QuantifiedInterpolants, 4107 SizeOfPredicates, 10 NumberOfNonLiveVariables, 625 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 0/38 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