/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-04 21:12:29,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-04 21:12:29,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-04 21:12:29,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-04 21:12:29,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-04 21:12:29,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-04 21:12:29,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-04 21:12:29,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-04 21:12:29,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-04 21:12:29,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-04 21:12:29,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-04 21:12:29,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-04 21:12:29,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-04 21:12:29,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-04 21:12:29,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-04 21:12:29,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-04 21:12:29,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-04 21:12:29,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-04 21:12:29,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-04 21:12:29,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-04 21:12:29,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-04 21:12:29,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-04 21:12:29,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-04 21:12:29,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-04 21:12:29,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-04 21:12:29,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-04 21:12:29,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-04 21:12:29,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-04 21:12:29,097 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 21:12:29,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-04 21:12:29,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-04 21:12:29,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-04 21:12:29,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-04 21:12:29,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-04 21:12:29,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-04 21:12:29,127 INFO L138 SettingsManager]: * Use SBE=true [2021-06-04 21:12:29,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-04 21:12:29,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-04 21:12:29,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-04 21:12:29,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-04 21:12:29,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-04 21:12:29,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-04 21:12:29,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-04 21:12:29,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-04 21:12:29,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-04 21:12:29,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-04 21:12:29,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-04 21:12:29,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-04 21:12:29,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-04 21:12:29,130 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-04 21:12:29,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-04 21:12:29,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-04 21:12:29,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-04 21:12:29,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-04 21:12:29,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-04 21:12:29,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-04 21:12:29,385 INFO L275 PluginConnector]: CDTParser initialized [2021-06-04 21:12:29,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2021-06-04 21:12:29,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c35d654a/787a5301205e4d4eb769017ab53bc52e/FLAG702b081e3 [2021-06-04 21:12:29,833 INFO L306 CDTParser]: Found 1 translation units. [2021-06-04 21:12:29,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2021-06-04 21:12:29,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c35d654a/787a5301205e4d4eb769017ab53bc52e/FLAG702b081e3 [2021-06-04 21:12:30,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c35d654a/787a5301205e4d4eb769017ab53bc52e [2021-06-04 21:12:30,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-04 21:12:30,255 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-04 21:12:30,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-04 21:12:30,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-04 21:12:30,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-04 21:12:30,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c40176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30, skipping insertion in model container [2021-06-04 21:12:30,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 09:12:30" (1/1) ... [2021-06-04 21:12:30,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-04 21:12:30,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-04 21:12:30,494 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-2.i[30286,30299] [2021-06-04 21:12:30,504 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-2.i[31040,31053] [2021-06-04 21:12:30,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-04 21:12:30,510 INFO L203 MainTranslator]: Completed pre-run [2021-06-04 21:12:30,560 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-2.i[30286,30299] [2021-06-04 21:12:30,564 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-2.i[31040,31053] [2021-06-04 21:12:30,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-04 21:12:30,608 INFO L208 MainTranslator]: Completed translation [2021-06-04 21:12:30,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:12:30 WrapperNode [2021-06-04 21:12:30,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-04 21:12:30,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-04 21:12:30,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-04 21:12:30,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-04 21:12:30,613 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 21:12:30,621 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 21:12:30,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-04 21:12:30,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-04 21:12:30,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-04 21:12:30,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-04 21:12:30,635 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 21:12:30,635 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 21:12:30,636 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 21:12:30,637 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 21:12:30,639 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 21:12:30,641 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 21:12:30,642 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 21:12:30,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-04 21:12:30,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-04 21:12:30,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-04 21:12:30,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-04 21:12:30,645 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 21:12:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-04 21:12:30,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-04 21:12:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-04 21:12:30,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-04 21:12:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-04 21:12:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-04 21:12:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-04 21:12:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-04 21:12:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-04 21:12:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-04 21:12:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-04 21:12:30,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-04 21:12:30,701 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 21:12:30,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-04 21:12:30,982 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-04 21:12:30,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 09:12:30 BoogieIcfgContainer [2021-06-04 21:12:30,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-04 21:12:30,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-04 21:12:30,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-04 21:12:30,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-04 21:12:30,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 09:12:30" (1/3) ... [2021-06-04 21:12:30,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710ca547 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 21:12:30,987 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 21:12:30,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710ca547 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 21:12:30,987 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 21:12:30,988 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-2.i [2021-06-04 21:12:30,992 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-04 21:12:30,992 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-04 21:12:30,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-04 21:12:30,993 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-04 21:12:31,009 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,009 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,009 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,009 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,009 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,010 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,010 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,010 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,010 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,010 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,010 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,010 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,011 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,012 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,012 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,012 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,012 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,012 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,012 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,012 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,012 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,013 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,016 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,016 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,016 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,016 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,016 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,016 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,018 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,018 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,018 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,022 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,022 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,022 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,022 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,022 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,022 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:12:31,023 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-04 21:12:31,038 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-04 21:12:31,068 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-04 21:12:31,068 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-04 21:12:31,068 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-04 21:12:31,068 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-04 21:12:31,068 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-04 21:12:31,068 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-04 21:12:31,069 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-04 21:12:31,069 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-04 21:12:31,079 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-06-04 21:12:31,159 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 21:12:31,165 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 21:12:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-04 21:12:31,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:31,179 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 21:12:31,179 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:31,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:31,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1746009969, now seen corresponding path program 1 times [2021-06-04 21:12:31,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:31,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059670239] [2021-06-04 21:12:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:31,449 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 21:12:31,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:31,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059670239] [2021-06-04 21:12:31,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059670239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:31,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:31,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-04 21:12:31,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410603148] [2021-06-04 21:12:31,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-04 21:12:31,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:31,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-04 21:12:31,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-04 21:12:31,476 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 21:12:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:31,581 INFO L93 Difference]: Finished difference Result 3996 states and 11572 transitions. [2021-06-04 21:12:31,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-04 21:12:31,582 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 21:12:31,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:31,602 INFO L225 Difference]: With dead ends: 3996 [2021-06-04 21:12:31,602 INFO L226 Difference]: Without dead ends: 1425 [2021-06-04 21:12:31,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-04 21:12:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-06-04 21:12:31,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-06-04 21:12:31,672 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 21:12:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-06-04 21:12:31,677 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-06-04 21:12:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:31,677 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-06-04 21:12:31,677 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 21:12:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-06-04 21:12:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-04 21:12:31,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:31,682 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 21:12:31,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-04 21:12:31,683 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:31,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:31,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1710770003, now seen corresponding path program 1 times [2021-06-04 21:12:31,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:31,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589722500] [2021-06-04 21:12:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:31,790 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 21:12:31,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:31,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589722500] [2021-06-04 21:12:31,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589722500] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:31,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:31,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-04 21:12:31,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687163062] [2021-06-04 21:12:31,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-04 21:12:31,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:31,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-04 21:12:31,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-04 21:12:31,794 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 21:12:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:31,902 INFO L93 Difference]: Finished difference Result 2001 states and 5364 transitions. [2021-06-04 21:12:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-04 21:12:31,903 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 21:12:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:31,910 INFO L225 Difference]: With dead ends: 2001 [2021-06-04 21:12:31,911 INFO L226 Difference]: Without dead ends: 1670 [2021-06-04 21:12:31,912 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-06-04 21:12:31,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-06-04 21:12:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1304. [2021-06-04 21:12:31,946 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 21:12:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 3545 transitions. [2021-06-04 21:12:31,950 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 3545 transitions. Word has length 37 [2021-06-04 21:12:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:31,951 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 3545 transitions. [2021-06-04 21:12:31,951 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 21:12:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 3545 transitions. [2021-06-04 21:12:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-04 21:12:31,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:31,954 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 21:12:31,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-04 21:12:31,954 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:31,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1013654691, now seen corresponding path program 1 times [2021-06-04 21:12:31,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:31,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496785488] [2021-06-04 21:12:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,030 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 21:12:32,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:32,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496785488] [2021-06-04 21:12:32,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496785488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:32,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:32,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-04 21:12:32,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601137881] [2021-06-04 21:12:32,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-04 21:12:32,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:32,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-04 21:12:32,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-04 21:12:32,032 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 21:12:32,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:32,120 INFO L93 Difference]: Finished difference Result 2270 states and 6052 transitions. [2021-06-04 21:12:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-04 21:12:32,121 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 21:12:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:32,127 INFO L225 Difference]: With dead ends: 2270 [2021-06-04 21:12:32,127 INFO L226 Difference]: Without dead ends: 2003 [2021-06-04 21:12:32,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-04 21:12:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-06-04 21:12:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1514. [2021-06-04 21:12:32,154 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 21:12:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-06-04 21:12:32,158 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-06-04 21:12:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:32,158 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-06-04 21:12:32,159 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 21:12:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-06-04 21:12:32,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-04 21:12:32,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:32,161 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 21:12:32,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-04 21:12:32,161 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:32,161 INFO L82 PathProgramCache]: Analyzing trace with hash 244026397, now seen corresponding path program 1 times [2021-06-04 21:12:32,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:32,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054067385] [2021-06-04 21:12:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,239 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 21:12:32,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:32,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054067385] [2021-06-04 21:12:32,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054067385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:32,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:32,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-04 21:12:32,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472199567] [2021-06-04 21:12:32,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-04 21:12:32,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:32,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-04 21:12:32,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-04 21:12:32,247 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 21:12:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:32,346 INFO L93 Difference]: Finished difference Result 2443 states and 6548 transitions. [2021-06-04 21:12:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-04 21:12:32,346 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 21:12:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:32,353 INFO L225 Difference]: With dead ends: 2443 [2021-06-04 21:12:32,354 INFO L226 Difference]: Without dead ends: 2176 [2021-06-04 21:12:32,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-04 21:12:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-06-04 21:12:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1544. [2021-06-04 21:12:32,380 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 21:12:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 4217 transitions. [2021-06-04 21:12:32,384 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 4217 transitions. Word has length 42 [2021-06-04 21:12:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:32,385 INFO L482 AbstractCegarLoop]: Abstraction has 1544 states and 4217 transitions. [2021-06-04 21:12:32,385 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 21:12:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 4217 transitions. [2021-06-04 21:12:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-04 21:12:32,387 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:32,387 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 21:12:32,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-04 21:12:32,388 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:32,388 INFO L82 PathProgramCache]: Analyzing trace with hash 730868611, now seen corresponding path program 2 times [2021-06-04 21:12:32,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:32,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297182287] [2021-06-04 21:12:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,467 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 21:12:32,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:32,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297182287] [2021-06-04 21:12:32,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297182287] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:12:32,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:12:32,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-04 21:12:32,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960399094] [2021-06-04 21:12:32,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-04 21:12:32,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:32,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-04 21:12:32,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-04 21:12:32,468 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 21:12:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:32,576 INFO L93 Difference]: Finished difference Result 2880 states and 7692 transitions. [2021-06-04 21:12:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-04 21:12:32,577 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 21:12:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:32,584 INFO L225 Difference]: With dead ends: 2880 [2021-06-04 21:12:32,585 INFO L226 Difference]: Without dead ends: 2565 [2021-06-04 21:12:32,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-04 21:12:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2021-06-04 21:12:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 1746. [2021-06-04 21:12:32,616 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 21:12:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 4761 transitions. [2021-06-04 21:12:32,621 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 4761 transitions. Word has length 42 [2021-06-04 21:12:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:32,621 INFO L482 AbstractCegarLoop]: Abstraction has 1746 states and 4761 transitions. [2021-06-04 21:12:32,621 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 21:12:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 4761 transitions. [2021-06-04 21:12:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-04 21:12:32,623 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:32,623 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 21:12:32,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-04 21:12:32,623 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:32,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:32,623 INFO L82 PathProgramCache]: Analyzing trace with hash -502364404, now seen corresponding path program 1 times [2021-06-04 21:12:32,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:32,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116128224] [2021-06-04 21:12:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,682 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 21:12:32,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:32,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116128224] [2021-06-04 21:12:32,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116128224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:32,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871638495] [2021-06-04 21:12:32,683 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 21:12:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:32,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-04 21:12:32,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:33,041 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 21:12:33,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871638495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:33,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:33,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-04 21:12:33,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271175846] [2021-06-04 21:12:33,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-04 21:12:33,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:33,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-04 21:12:33,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-04 21:12:33,044 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 21:12:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:33,273 INFO L93 Difference]: Finished difference Result 3320 states and 8844 transitions. [2021-06-04 21:12:33,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-04 21:12:33,273 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 21:12:33,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:33,284 INFO L225 Difference]: With dead ends: 3320 [2021-06-04 21:12:33,284 INFO L226 Difference]: Without dead ends: 2786 [2021-06-04 21:12:33,284 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 217.1ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-04 21:12:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-06-04 21:12:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2113. [2021-06-04 21:12:33,330 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 21:12:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5730 transitions. [2021-06-04 21:12:33,335 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5730 transitions. Word has length 42 [2021-06-04 21:12:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:33,335 INFO L482 AbstractCegarLoop]: Abstraction has 2113 states and 5730 transitions. [2021-06-04 21:12:33,335 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 21:12:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5730 transitions. [2021-06-04 21:12:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-04 21:12:33,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:33,338 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 21:12:33,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-04 21:12:33,555 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:33,555 INFO L82 PathProgramCache]: Analyzing trace with hash 287612470, now seen corresponding path program 1 times [2021-06-04 21:12:33,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:33,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341076954] [2021-06-04 21:12:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:33,626 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 21:12:33,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:33,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341076954] [2021-06-04 21:12:33,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341076954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:33,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83372418] [2021-06-04 21:12:33,627 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 21:12:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:33,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-04 21:12:33,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:33,871 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 21:12:33,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83372418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:33,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:33,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-04 21:12:33,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698723744] [2021-06-04 21:12:33,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-04 21:12:33,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:33,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-04 21:12:33,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-04 21:12:33,873 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 21:12:34,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:34,154 INFO L93 Difference]: Finished difference Result 4087 states and 10892 transitions. [2021-06-04 21:12:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-04 21:12:34,157 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 21:12:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:34,175 INFO L225 Difference]: With dead ends: 4087 [2021-06-04 21:12:34,175 INFO L226 Difference]: Without dead ends: 3529 [2021-06-04 21:12:34,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 240.0ms TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2021-06-04 21:12:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-06-04 21:12:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2150. [2021-06-04 21:12:34,212 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 21:12:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 5854 transitions. [2021-06-04 21:12:34,216 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 5854 transitions. Word has length 47 [2021-06-04 21:12:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:34,216 INFO L482 AbstractCegarLoop]: Abstraction has 2150 states and 5854 transitions. [2021-06-04 21:12:34,216 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 21:12:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 5854 transitions. [2021-06-04 21:12:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-04 21:12:34,219 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:34,219 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 21:12:34,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:34,435 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:34,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:34,435 INFO L82 PathProgramCache]: Analyzing trace with hash -81106442, now seen corresponding path program 2 times [2021-06-04 21:12:34,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:34,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85721530] [2021-06-04 21:12:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:34,520 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 21:12:34,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:34,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85721530] [2021-06-04 21:12:34,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85721530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:34,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288012022] [2021-06-04 21:12:34,521 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 21:12:34,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-04 21:12:34,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-04 21:12:34,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-04 21:12:34,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:34,727 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 21:12:34,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288012022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:34,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:34,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-04 21:12:34,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309543845] [2021-06-04 21:12:34,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-04 21:12:34,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:34,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-04 21:12:34,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-04 21:12:34,734 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 21:12:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:35,246 INFO L93 Difference]: Finished difference Result 5683 states and 15052 transitions. [2021-06-04 21:12:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-04 21:12:35,246 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 21:12:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:35,256 INFO L225 Difference]: With dead ends: 5683 [2021-06-04 21:12:35,256 INFO L226 Difference]: Without dead ends: 4810 [2021-06-04 21:12:35,257 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 418.7ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-06-04 21:12:35,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-06-04 21:12:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 2817. [2021-06-04 21:12:35,337 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 21:12:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-06-04 21:12:35,341 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-06-04 21:12:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:35,342 INFO L482 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-06-04 21:12:35,342 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 21:12:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-06-04 21:12:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-04 21:12:35,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:35,345 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 21:12:35,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-04 21:12:35,563 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1844068483, now seen corresponding path program 3 times [2021-06-04 21:12:35,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:35,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894269574] [2021-06-04 21:12:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:35,641 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 21:12:35,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:35,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894269574] [2021-06-04 21:12:35,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894269574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:35,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823155939] [2021-06-04 21:12:35,641 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 21:12:35,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-04 21:12:35,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-04 21:12:35,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-04 21:12:35,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:35,850 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 21:12:35,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823155939] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:35,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:35,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-04 21:12:35,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309848154] [2021-06-04 21:12:35,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-04 21:12:35,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:35,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-04 21:12:35,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-04 21:12:35,851 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 21:12:36,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:36,317 INFO L93 Difference]: Finished difference Result 6066 states and 16356 transitions. [2021-06-04 21:12:36,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-04 21:12:36,318 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 21:12:36,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:36,326 INFO L225 Difference]: With dead ends: 6066 [2021-06-04 21:12:36,327 INFO L226 Difference]: Without dead ends: 5390 [2021-06-04 21:12:36,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 405.1ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-06-04 21:12:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2021-06-04 21:12:36,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 3186. [2021-06-04 21:12:36,416 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 21:12:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 8849 transitions. [2021-06-04 21:12:36,422 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 8849 transitions. Word has length 52 [2021-06-04 21:12:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:36,423 INFO L482 AbstractCegarLoop]: Abstraction has 3186 states and 8849 transitions. [2021-06-04 21:12:36,423 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 21:12:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 8849 transitions. [2021-06-04 21:12:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-04 21:12:36,427 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:36,427 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 21:12:36,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-04 21:12:36,645 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:36,646 INFO L82 PathProgramCache]: Analyzing trace with hash 292564843, now seen corresponding path program 1 times [2021-06-04 21:12:36,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:36,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646447484] [2021-06-04 21:12:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:36,720 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 21:12:36,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:36,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646447484] [2021-06-04 21:12:36,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646447484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:36,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114102728] [2021-06-04 21:12:36,721 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 21:12:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:36,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-04 21:12:36,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-04 21:12:36,927 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 21:12:36,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114102728] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:36,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-04 21:12:36,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-04 21:12:36,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929908793] [2021-06-04 21:12:36,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-04 21:12:36,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:12:36,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-04 21:12:36,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-06-04 21:12:36,929 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 21:12:37,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:12:37,488 INFO L93 Difference]: Finished difference Result 6755 states and 18323 transitions. [2021-06-04 21:12:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-04 21:12:37,493 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 21:12:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:12:37,521 INFO L225 Difference]: With dead ends: 6755 [2021-06-04 21:12:37,522 INFO L226 Difference]: Without dead ends: 6325 [2021-06-04 21:12:37,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 477.0ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-06-04 21:12:37,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-06-04 21:12:37,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 3417. [2021-06-04 21:12:37,588 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 21:12:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-06-04 21:12:37,596 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 52 [2021-06-04 21:12:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:12:37,597 INFO L482 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-06-04 21:12:37,597 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 21:12:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-06-04 21:12:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-04 21:12:37,601 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:12:37,602 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 21:12:37,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-04 21:12:37,818 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 21:12:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:12:37,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1152083460, now seen corresponding path program 4 times [2021-06-04 21:12:37,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:12:37,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682630218] [2021-06-04 21:12:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:12:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:12:37,895 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 21:12:37,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:12:37,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682630218] [2021-06-04 21:12:37,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682630218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-04 21:12:37,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000110650] [2021-06-04 21:12:37,895 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 21:12:37,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-04 21:12:37,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-04 21:12:37,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-04 21:12:37,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown