/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:37:29,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:37:29,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:37:29,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:37:29,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:37:29,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:37:29,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:37:29,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:37:29,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:37:29,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:37:29,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:37:29,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:37:29,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:37:29,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:37:29,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:37:29,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:37:29,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:37:29,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:37:29,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:37:29,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:37:29,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:37:29,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:37:30,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:37:30,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:37:30,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:37:30,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:37:30,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:37:30,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:37:30,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:37:30,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:37:30,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:37:30,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:37:30,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:37:30,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:37:30,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:37:30,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:37:30,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:37:30,095 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:37:30,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:37:30,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:37:30,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:37:30,099 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:37:30,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:37:30,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:37:30,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:37:30,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:37:30,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:37:30,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:37:30,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:37:30,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:37:30,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:37:30,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:37:30,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:37:30,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:37:30,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:37:30,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:37:30,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:37:30,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:37:30,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:37:30,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:37:30,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:37:30,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:37:30,105 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:37:30,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:37:30,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:37:30,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:37:30,592 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:37:30,593 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:37:30,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2021-01-06 23:37:30,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a7ddc76ea/7ca08102417f4adcbedbc6358658186e/FLAGa94f456f1 [2021-01-06 23:37:31,364 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:37:31,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2021-01-06 23:37:31,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a7ddc76ea/7ca08102417f4adcbedbc6358658186e/FLAGa94f456f1 [2021-01-06 23:37:31,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a7ddc76ea/7ca08102417f4adcbedbc6358658186e [2021-01-06 23:37:31,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:37:31,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:37:31,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:37:31,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:37:31,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:37:31,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:37:31" (1/1) ... [2021-01-06 23:37:31,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd42196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:31, skipping insertion in model container [2021-01-06 23:37:31,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:37:31" (1/1) ... [2021-01-06 23:37:31,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:37:31,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:37:32,050 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:37:32,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:37:32,363 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:37:32,379 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:37:32,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:37:32,560 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:37:32,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32 WrapperNode [2021-01-06 23:37:32,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:37:32,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:37:32,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:37:32,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:37:32,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:37:32,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:37:32,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:37:32,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:37:32,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... [2021-01-06 23:37:32,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:37:32,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:37:32,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:37:32,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:37:32,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 23:37:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:37:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:37:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:37:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:37:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:37:32,786 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:37:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:37:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:37:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:37:32,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:37:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-06 23:37:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-06 23:37:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:37:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:37:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:37:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:37:32,795 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:37:33,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:37:33,320 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:37:33,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:33 BoogieIcfgContainer [2021-01-06 23:37:33,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:37:33,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:37:33,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:37:33,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:37:33,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:37:31" (1/3) ... [2021-01-06 23:37:33,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d2a23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:37:33, skipping insertion in model container [2021-01-06 23:37:33,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:32" (2/3) ... [2021-01-06 23:37:33,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d2a23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:37:33, skipping insertion in model container [2021-01-06 23:37:33,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:33" (3/3) ... [2021-01-06 23:37:33,331 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2021-01-06 23:37:33,339 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:37:33,339 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:37:33,345 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:37:33,346 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:37:33,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,381 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,381 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,382 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,382 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,384 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,385 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,385 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,385 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,390 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,391 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,391 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,391 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,391 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,391 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,392 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,392 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,392 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,392 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,392 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,393 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,395 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,396 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,402 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,402 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,402 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,402 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,405 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,405 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:33,410 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:37:33,439 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 23:37:33,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:37:33,476 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:37:33,477 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:37:33,477 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:37:33,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:37:33,477 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:37:33,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:37:33,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:37:33,500 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:37:33,502 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2021-01-06 23:37:33,506 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2021-01-06 23:37:33,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2021-01-06 23:37:33,604 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-01-06 23:37:33,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:37:33,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-01-06 23:37:33,624 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2021-01-06 23:37:37,280 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-01-06 23:37:37,392 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-01-06 23:37:37,633 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-01-06 23:37:37,737 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-01-06 23:37:37,999 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2021-01-06 23:37:38,000 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-01-06 23:37:38,007 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2021-01-06 23:37:38,078 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2021-01-06 23:37:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2021-01-06 23:37:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:37:38,090 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:38,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:38,092 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:38,098 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2021-01-06 23:37:38,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:38,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133304445] [2021-01-06 23:37:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:38,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133304445] [2021-01-06 23:37:38,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:38,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-06 23:37:38,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335482289] [2021-01-06 23:37:38,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:37:38,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:38,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:37:38,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:37:38,473 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2021-01-06 23:37:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:38,550 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2021-01-06 23:37:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:37:38,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 23:37:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:38,577 INFO L225 Difference]: With dead ends: 832 [2021-01-06 23:37:38,578 INFO L226 Difference]: Without dead ends: 553 [2021-01-06 23:37:38,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:37:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-01-06 23:37:38,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2021-01-06 23:37:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2021-01-06 23:37:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2021-01-06 23:37:38,715 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2021-01-06 23:37:38,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:38,717 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2021-01-06 23:37:38,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:37:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2021-01-06 23:37:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:37:38,722 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:38,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:38,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:37:38,724 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:38,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:38,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2021-01-06 23:37:38,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:38,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970731927] [2021-01-06 23:37:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:38,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970731927] [2021-01-06 23:37:38,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:38,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:38,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865345236] [2021-01-06 23:37:38,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:38,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:38,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:38,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:38,906 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2021-01-06 23:37:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:38,962 INFO L93 Difference]: Finished difference Result 661 states and 2211 transitions. [2021-01-06 23:37:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:37:38,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:37:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:38,971 INFO L225 Difference]: With dead ends: 661 [2021-01-06 23:37:38,971 INFO L226 Difference]: Without dead ends: 661 [2021-01-06 23:37:38,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:38,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-01-06 23:37:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 634. [2021-01-06 23:37:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2021-01-06 23:37:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2130 transitions. [2021-01-06 23:37:39,007 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2130 transitions. Word has length 11 [2021-01-06 23:37:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:39,007 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 2130 transitions. [2021-01-06 23:37:39,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2130 transitions. [2021-01-06 23:37:39,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:37:39,010 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:39,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:39,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:37:39,010 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:39,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:39,011 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2021-01-06 23:37:39,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:39,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703497658] [2021-01-06 23:37:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:39,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703497658] [2021-01-06 23:37:39,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:39,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:39,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265979618] [2021-01-06 23:37:39,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:39,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:39,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:39,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:39,102 INFO L87 Difference]: Start difference. First operand 634 states and 2130 transitions. Second operand 4 states. [2021-01-06 23:37:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:39,138 INFO L93 Difference]: Finished difference Result 814 states and 2631 transitions. [2021-01-06 23:37:39,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:39,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:37:39,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:39,143 INFO L225 Difference]: With dead ends: 814 [2021-01-06 23:37:39,143 INFO L226 Difference]: Without dead ends: 454 [2021-01-06 23:37:39,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-01-06 23:37:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 442. [2021-01-06 23:37:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2021-01-06 23:37:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1382 transitions. [2021-01-06 23:37:39,162 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1382 transitions. Word has length 11 [2021-01-06 23:37:39,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:39,162 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1382 transitions. [2021-01-06 23:37:39,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:39,163 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1382 transitions. [2021-01-06 23:37:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:37:39,166 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:39,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:39,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:37:39,167 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:39,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2021-01-06 23:37:39,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:39,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039740459] [2021-01-06 23:37:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:39,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039740459] [2021-01-06 23:37:39,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:39,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:39,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467130373] [2021-01-06 23:37:39,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:39,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:39,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:39,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:39,239 INFO L87 Difference]: Start difference. First operand 442 states and 1382 transitions. Second operand 4 states. [2021-01-06 23:37:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:39,262 INFO L93 Difference]: Finished difference Result 424 states and 1313 transitions. [2021-01-06 23:37:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:37:39,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 23:37:39,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:39,270 INFO L225 Difference]: With dead ends: 424 [2021-01-06 23:37:39,271 INFO L226 Difference]: Without dead ends: 424 [2021-01-06 23:37:39,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-01-06 23:37:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-01-06 23:37:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2021-01-06 23:37:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1313 transitions. [2021-01-06 23:37:39,296 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1313 transitions. Word has length 12 [2021-01-06 23:37:39,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:39,297 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 1313 transitions. [2021-01-06 23:37:39,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1313 transitions. [2021-01-06 23:37:39,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:37:39,298 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:39,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:39,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:37:39,298 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:39,299 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2021-01-06 23:37:39,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:39,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625184356] [2021-01-06 23:37:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:39,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625184356] [2021-01-06 23:37:39,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:39,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:39,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119453955] [2021-01-06 23:37:39,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:37:39,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:39,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:37:39,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:39,417 INFO L87 Difference]: Start difference. First operand 424 states and 1313 transitions. Second operand 5 states. [2021-01-06 23:37:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:39,458 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2021-01-06 23:37:39,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:39,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:37:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:39,461 INFO L225 Difference]: With dead ends: 514 [2021-01-06 23:37:39,461 INFO L226 Difference]: Without dead ends: 226 [2021-01-06 23:37:39,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:37:39,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-01-06 23:37:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-01-06 23:37:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-01-06 23:37:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2021-01-06 23:37:39,471 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2021-01-06 23:37:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:39,471 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2021-01-06 23:37:39,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:37:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2021-01-06 23:37:39,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:37:39,472 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:39,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:39,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:37:39,473 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:39,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2021-01-06 23:37:39,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:39,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689042694] [2021-01-06 23:37:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:39,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689042694] [2021-01-06 23:37:39,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:39,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739006285] [2021-01-06 23:37:39,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:39,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:39,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:39,583 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2021-01-06 23:37:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:39,634 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2021-01-06 23:37:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:37:39,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 23:37:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:39,636 INFO L225 Difference]: With dead ends: 287 [2021-01-06 23:37:39,636 INFO L226 Difference]: Without dead ends: 206 [2021-01-06 23:37:39,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-01-06 23:37:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-01-06 23:37:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2021-01-06 23:37:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2021-01-06 23:37:39,644 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2021-01-06 23:37:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:39,645 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2021-01-06 23:37:39,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2021-01-06 23:37:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:37:39,646 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:39,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:39,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:37:39,647 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2021-01-06 23:37:39,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:39,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995984569] [2021-01-06 23:37:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:39,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995984569] [2021-01-06 23:37:39,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:39,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:39,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21894255] [2021-01-06 23:37:39,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:37:39,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:37:39,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:39,771 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2021-01-06 23:37:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:39,832 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2021-01-06 23:37:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:37:39,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:37:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:39,835 INFO L225 Difference]: With dead ends: 227 [2021-01-06 23:37:39,835 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 23:37:39,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:37:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 23:37:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-01-06 23:37:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-06 23:37:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2021-01-06 23:37:39,842 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2021-01-06 23:37:39,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:39,843 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2021-01-06 23:37:39,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:37:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2021-01-06 23:37:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:37:39,846 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:39,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:39,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:37:39,847 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2021-01-06 23:37:39,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:39,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336226575] [2021-01-06 23:37:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:39,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336226575] [2021-01-06 23:37:39,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:39,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:37:39,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802644063] [2021-01-06 23:37:39,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:37:39,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:39,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:37:39,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:37:39,953 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2021-01-06 23:37:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:40,019 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2021-01-06 23:37:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:37:40,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 23:37:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:40,021 INFO L225 Difference]: With dead ends: 158 [2021-01-06 23:37:40,022 INFO L226 Difference]: Without dead ends: 125 [2021-01-06 23:37:40,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:37:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-06 23:37:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-01-06 23:37:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-06 23:37:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2021-01-06 23:37:40,027 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2021-01-06 23:37:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:40,027 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2021-01-06 23:37:40,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:37:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2021-01-06 23:37:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:37:40,028 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:40,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:40,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:37:40,029 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:40,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:40,029 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2021-01-06 23:37:40,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:40,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221029172] [2021-01-06 23:37:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:40,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221029172] [2021-01-06 23:37:40,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:40,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:40,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152603305] [2021-01-06 23:37:40,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:40,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:40,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:40,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:40,111 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2021-01-06 23:37:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:40,129 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2021-01-06 23:37:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:40,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-01-06 23:37:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:40,131 INFO L225 Difference]: With dead ends: 166 [2021-01-06 23:37:40,132 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 23:37:40,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 23:37:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-01-06 23:37:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-06 23:37:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2021-01-06 23:37:40,137 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2021-01-06 23:37:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:40,138 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2021-01-06 23:37:40,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2021-01-06 23:37:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:37:40,138 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:40,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:40,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:37:40,139 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:40,139 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2021-01-06 23:37:40,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:40,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971593904] [2021-01-06 23:37:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:40,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971593904] [2021-01-06 23:37:40,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:40,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:40,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159869350] [2021-01-06 23:37:40,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:40,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:40,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:40,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:40,202 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2021-01-06 23:37:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:40,219 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2021-01-06 23:37:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:40,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-01-06 23:37:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:40,220 INFO L225 Difference]: With dead ends: 142 [2021-01-06 23:37:40,220 INFO L226 Difference]: Without dead ends: 87 [2021-01-06 23:37:40,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-06 23:37:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-01-06 23:37:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 23:37:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2021-01-06 23:37:40,224 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2021-01-06 23:37:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:40,224 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2021-01-06 23:37:40,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2021-01-06 23:37:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:37:40,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:40,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:40,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:37:40,226 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:40,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2021-01-06 23:37:40,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:40,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061844789] [2021-01-06 23:37:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:37:40,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061844789] [2021-01-06 23:37:40,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:40,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:37:40,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961956609] [2021-01-06 23:37:40,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 23:37:40,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:40,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 23:37:40,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:37:40,291 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2021-01-06 23:37:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:40,336 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2021-01-06 23:37:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:37:40,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 23:37:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:40,337 INFO L225 Difference]: With dead ends: 81 [2021-01-06 23:37:40,337 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:37:40,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:37:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:37:40,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:37:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:37:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:37:40,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-01-06 23:37:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:40,338 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:37:40,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 23:37:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:37:40,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:37:40,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:37:40,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:37:40 BasicIcfg [2021-01-06 23:37:40,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:37:40,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:37:40,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:37:40,344 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:37:40,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:33" (3/4) ... [2021-01-06 23:37:40,348 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:37:40,356 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:37:40,356 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:37:40,356 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:37:40,356 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-01-06 23:37:40,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-01-06 23:37:40,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:37:40,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:37:40,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:37:40,404 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe027_pso.oepc.i-witness.graphml [2021-01-06 23:37:40,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:37:40,405 INFO L168 Benchmark]: Toolchain (without parser) took 8751.36 ms. Allocated memory was 151.0 MB in the beginning and 237.0 MB in the end (delta: 86.0 MB). Free memory was 124.7 MB in the beginning and 131.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 80.6 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:40,406 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:37:40,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 904.12 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 127.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:40,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.32 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 125.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:40,407 INFO L168 Benchmark]: Boogie Preprocessor took 31.55 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 124.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:40,408 INFO L168 Benchmark]: RCFGBuilder took 664.69 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 100.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:40,408 INFO L168 Benchmark]: TraceAbstraction took 7019.24 ms. Allocated memory was 151.0 MB in the beginning and 237.0 MB in the end (delta: 86.0 MB). Free memory was 99.8 MB in the beginning and 134.1 MB in the end (delta: -34.3 MB). Peak memory consumption was 52.7 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:40,409 INFO L168 Benchmark]: Witness Printer took 60.20 ms. Allocated memory is still 237.0 MB. Free memory was 134.1 MB in the beginning and 131.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:40,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 904.12 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 127.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 61.32 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 125.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.55 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 124.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 664.69 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 100.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7019.24 ms. Allocated memory was 151.0 MB in the beginning and 237.0 MB in the end (delta: 86.0 MB). Free memory was 99.8 MB in the beginning and 134.1 MB in the end (delta: -34.3 MB). Peak memory consumption was 52.7 MB. Max. memory is 8.0 GB. * Witness Printer took 60.20 ms. Allocated memory is still 237.0 MB. Free memory was 134.1 MB in the beginning and 131.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 235 SDtfs, 294 SDslu, 344 SDs, 0 SdLazy, 183 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 8451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...