/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/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:35:40,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:35:40,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:35:40,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:35:40,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:35:40,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:35:40,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:35:40,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:35:40,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:35:40,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:35:40,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:35:40,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:35:40,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:35:40,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:35:40,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:35:40,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:35:40,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:35:40,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:35:40,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:35:40,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:35:40,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:35:40,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:35:40,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:35:40,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:35:40,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:35:40,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:35:40,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:35:40,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:35:40,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:35:40,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:35:40,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:35:40,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:35:40,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:35:40,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:35:40,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:35:40,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:35:40,709 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 23:35:40,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:35:40,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:35:40,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:35:40,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:35:40,759 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:35:40,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:35:40,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:35:40,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:35:40,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:35:40,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:35:40,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:35:40,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:35:40,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:35:40,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:35:40,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:35:40,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:35:40,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:35:40,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:35:40,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:35:40,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:35:40,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:35:40,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:35:40,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:35:40,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:35:40,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:35:40,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:35:41,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:35:41,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:35:41,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:35:41,212 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:35:41,212 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:35:41,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2021-01-06 23:35:41,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7023675d1/0bb55b6cb3fd429e8cc9b6667c6ac931/FLAG8d9acc6a0 [2021-01-06 23:35:41,864 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:35:41,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2021-01-06 23:35:41,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7023675d1/0bb55b6cb3fd429e8cc9b6667c6ac931/FLAG8d9acc6a0 [2021-01-06 23:35:42,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7023675d1/0bb55b6cb3fd429e8cc9b6667c6ac931 [2021-01-06 23:35:42,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:35:42,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:35:42,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:35:42,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:35:42,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:35:42,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:42,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780bc737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42, skipping insertion in model container [2021-01-06 23:35:42,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:42,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:35:42,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:35:42,440 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/safe020_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~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[~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$tmp_guard1~0,GLOBAL] [2021-01-06 23:35:42,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:35:42,674 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:35:42,693 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:35:42,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:35:42,870 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:35:42,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42 WrapperNode [2021-01-06 23:35:42,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:35:42,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:35:42,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:35:42,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:35:42,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:42,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:42,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:35:42,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:35:42,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:35:42,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:35:42,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:42,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:43,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:43,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:43,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:43,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:43,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 23:35:43,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:35:43,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:35:43,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:35:43,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:35:43,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (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 23:35:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:35:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:35:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:35:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:35:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:35:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:35:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:35:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:35:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:35:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:35:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:35:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:35:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:35:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:35:43,168 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 23:35:43,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:35:43,680 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:35:43,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:43 BoogieIcfgContainer [2021-01-06 23:35:43,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:35:43,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:35:43,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:35:43,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:35:43,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:35:42" (1/3) ... [2021-01-06 23:35:43,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4814e190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:35:43, skipping insertion in model container [2021-01-06 23:35:43,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (2/3) ... [2021-01-06 23:35:43,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4814e190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:35:43, skipping insertion in model container [2021-01-06 23:35:43,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:43" (3/3) ... [2021-01-06 23:35:43,691 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2021-01-06 23:35:43,697 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:35:43,697 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:35:43,703 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:35:43,704 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:35:43,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,734 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,734 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,737 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,737 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,740 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,740 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,750 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,751 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:43,755 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:35:43,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:35:43,796 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:35:43,796 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:35:43,796 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:35:43,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:35:43,797 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:35:43,797 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:35:43,797 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:35:43,797 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:35:43,810 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:35:43,812 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-01-06 23:35:43,816 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-01-06 23:35:43,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-01-06 23:35:43,874 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-01-06 23:35:43,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:35:43,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-01-06 23:35:43,893 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2021-01-06 23:35:46,754 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-01-06 23:35:47,052 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-01-06 23:35:47,297 INFO L131 LiptonReduction]: Checked pairs total: 2226 [2021-01-06 23:35:47,298 INFO L133 LiptonReduction]: Total number of compositions: 66 [2021-01-06 23:35:47,304 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2021-01-06 23:35:47,326 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2021-01-06 23:35:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2021-01-06 23:35:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:35:47,335 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:47,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:47,336 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash -938351108, now seen corresponding path program 1 times [2021-01-06 23:35:47,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:47,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005439813] [2021-01-06 23:35:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:47,655 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 23:35:47,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005439813] [2021-01-06 23:35:47,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:47,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-06 23:35:47,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565747215] [2021-01-06 23:35:47,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:35:47,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:47,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:35:47,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:35:47,697 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2021-01-06 23:35:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:47,775 INFO L93 Difference]: Finished difference Result 316 states and 835 transitions. [2021-01-06 23:35:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:35:47,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-01-06 23:35:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:47,800 INFO L225 Difference]: With dead ends: 316 [2021-01-06 23:35:47,801 INFO L226 Difference]: Without dead ends: 205 [2021-01-06 23:35:47,802 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 23:35:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-06 23:35:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2021-01-06 23:35:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2021-01-06 23:35:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 485 transitions. [2021-01-06 23:35:47,900 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 485 transitions. Word has length 8 [2021-01-06 23:35:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:47,902 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 485 transitions. [2021-01-06 23:35:47,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:35:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 485 transitions. [2021-01-06 23:35:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:35:47,905 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:47,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:47,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:35:47,906 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:47,908 INFO L82 PathProgramCache]: Analyzing trace with hash 395784729, now seen corresponding path program 1 times [2021-01-06 23:35:47,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:47,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674549290] [2021-01-06 23:35:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,041 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 23:35:48,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674549290] [2021-01-06 23:35:48,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:48,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091083204] [2021-01-06 23:35:48,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:48,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:48,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:48,046 INFO L87 Difference]: Start difference. First operand 187 states and 485 transitions. Second operand 4 states. [2021-01-06 23:35:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,075 INFO L93 Difference]: Finished difference Result 196 states and 488 transitions. [2021-01-06 23:35:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:35:48,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:35:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,080 INFO L225 Difference]: With dead ends: 196 [2021-01-06 23:35:48,080 INFO L226 Difference]: Without dead ends: 196 [2021-01-06 23:35:48,081 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 23:35:48,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-01-06 23:35:48,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 178. [2021-01-06 23:35:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2021-01-06 23:35:48,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 455 transitions. [2021-01-06 23:35:48,117 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 455 transitions. Word has length 9 [2021-01-06 23:35:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,118 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 455 transitions. [2021-01-06 23:35:48,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 455 transitions. [2021-01-06 23:35:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:35:48,119 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:48,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:48,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:35:48,120 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:48,121 INFO L82 PathProgramCache]: Analyzing trace with hash 975885903, now seen corresponding path program 1 times [2021-01-06 23:35:48,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:48,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191092485] [2021-01-06 23:35:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,193 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 23:35:48,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191092485] [2021-01-06 23:35:48,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:48,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859534137] [2021-01-06 23:35:48,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:48,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:48,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:48,197 INFO L87 Difference]: Start difference. First operand 178 states and 455 transitions. Second operand 4 states. [2021-01-06 23:35:48,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,216 INFO L93 Difference]: Finished difference Result 187 states and 464 transitions. [2021-01-06 23:35:48,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:35:48,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:35:48,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,218 INFO L225 Difference]: With dead ends: 187 [2021-01-06 23:35:48,218 INFO L226 Difference]: Without dead ends: 187 [2021-01-06 23:35:48,219 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 23:35:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-01-06 23:35:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2021-01-06 23:35:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-01-06 23:35:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 431 transitions. [2021-01-06 23:35:48,231 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 431 transitions. Word has length 9 [2021-01-06 23:35:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,231 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 431 transitions. [2021-01-06 23:35:48,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 431 transitions. [2021-01-06 23:35:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:35:48,233 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:48,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:48,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:35:48,233 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:48,234 INFO L82 PathProgramCache]: Analyzing trace with hash -615576110, now seen corresponding path program 1 times [2021-01-06 23:35:48,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:48,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299666560] [2021-01-06 23:35:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,301 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 23:35:48,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299666560] [2021-01-06 23:35:48,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:48,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619692769] [2021-01-06 23:35:48,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:48,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:48,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:48,304 INFO L87 Difference]: Start difference. First operand 169 states and 431 transitions. Second operand 4 states. [2021-01-06 23:35:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,346 INFO L93 Difference]: Finished difference Result 209 states and 515 transitions. [2021-01-06 23:35:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:48,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 23:35:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,353 INFO L225 Difference]: With dead ends: 209 [2021-01-06 23:35:48,354 INFO L226 Difference]: Without dead ends: 197 [2021-01-06 23:35:48,356 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 23:35:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-01-06 23:35:48,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2021-01-06 23:35:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2021-01-06 23:35:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 446 transitions. [2021-01-06 23:35:48,376 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 446 transitions. Word has length 10 [2021-01-06 23:35:48,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,378 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 446 transitions. [2021-01-06 23:35:48,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 446 transitions. [2021-01-06 23:35:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:35:48,380 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:48,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:48,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:35:48,380 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:48,384 INFO L82 PathProgramCache]: Analyzing trace with hash 187690604, now seen corresponding path program 2 times [2021-01-06 23:35:48,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:48,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99696566] [2021-01-06 23:35:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,476 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 23:35:48,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99696566] [2021-01-06 23:35:48,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:48,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190917510] [2021-01-06 23:35:48,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:48,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:48,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:48,479 INFO L87 Difference]: Start difference. First operand 175 states and 446 transitions. Second operand 5 states. [2021-01-06 23:35:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,507 INFO L93 Difference]: Finished difference Result 234 states and 564 transitions. [2021-01-06 23:35:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:48,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:35:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,510 INFO L225 Difference]: With dead ends: 234 [2021-01-06 23:35:48,510 INFO L226 Difference]: Without dead ends: 144 [2021-01-06 23:35:48,510 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 23:35:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-01-06 23:35:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2021-01-06 23:35:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-06 23:35:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 315 transitions. [2021-01-06 23:35:48,521 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 315 transitions. Word has length 10 [2021-01-06 23:35:48,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,522 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 315 transitions. [2021-01-06 23:35:48,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 315 transitions. [2021-01-06 23:35:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:35:48,526 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:48,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:48,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:35:48,527 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:48,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:48,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1342775669, now seen corresponding path program 1 times [2021-01-06 23:35:48,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:48,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753212007] [2021-01-06 23:35:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,625 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 23:35:48,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753212007] [2021-01-06 23:35:48,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:48,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059872822] [2021-01-06 23:35:48,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:48,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:48,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:48,628 INFO L87 Difference]: Start difference. First operand 132 states and 315 transitions. Second operand 4 states. [2021-01-06 23:35:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,668 INFO L93 Difference]: Finished difference Result 155 states and 339 transitions. [2021-01-06 23:35:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:48,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:35:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,670 INFO L225 Difference]: With dead ends: 155 [2021-01-06 23:35:48,670 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 23:35:48,670 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 23:35:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 23:35:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-01-06 23:35:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-01-06 23:35:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 251 transitions. [2021-01-06 23:35:48,675 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 251 transitions. Word has length 11 [2021-01-06 23:35:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,675 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 251 transitions. [2021-01-06 23:35:48,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 251 transitions. [2021-01-06 23:35:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:35:48,676 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:48,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:48,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:35:48,677 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:48,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1283997363, now seen corresponding path program 1 times [2021-01-06 23:35:48,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:48,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534583007] [2021-01-06 23:35:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,729 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 23:35:48,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534583007] [2021-01-06 23:35:48,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:48,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389502318] [2021-01-06 23:35:48,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:48,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:48,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:48,731 INFO L87 Difference]: Start difference. First operand 115 states and 251 transitions. Second operand 5 states. [2021-01-06 23:35:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,774 INFO L93 Difference]: Finished difference Result 116 states and 234 transitions. [2021-01-06 23:35:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:35:48,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:35:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,775 INFO L225 Difference]: With dead ends: 116 [2021-01-06 23:35:48,775 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 23:35:48,776 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 23:35:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 23:35:48,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-01-06 23:35:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-06 23:35:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 176 transitions. [2021-01-06 23:35:48,779 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 176 transitions. Word has length 12 [2021-01-06 23:35:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,780 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 176 transitions. [2021-01-06 23:35:48,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 176 transitions. [2021-01-06 23:35:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:35:48,781 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:48,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:48,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:35:48,781 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1633997476, now seen corresponding path program 1 times [2021-01-06 23:35:48,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:48,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743327647] [2021-01-06 23:35:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,842 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 23:35:48,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743327647] [2021-01-06 23:35:48,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:35:48,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170799841] [2021-01-06 23:35:48,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:35:48,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:35:48,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:48,844 INFO L87 Difference]: Start difference. First operand 89 states and 176 transitions. Second operand 6 states. [2021-01-06 23:35:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,889 INFO L93 Difference]: Finished difference Result 85 states and 166 transitions. [2021-01-06 23:35:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:35:48,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 23:35:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,890 INFO L225 Difference]: With dead ends: 85 [2021-01-06 23:35:48,890 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 23:35:48,891 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 23:35:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 23:35:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2021-01-06 23:35:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 23:35:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 83 transitions. [2021-01-06 23:35:48,893 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 83 transitions. Word has length 14 [2021-01-06 23:35:48,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,893 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 83 transitions. [2021-01-06 23:35:48,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:35:48,894 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 83 transitions. [2021-01-06 23:35:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:35:48,894 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:48,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:48,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:35:48,895 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:48,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:48,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1390745954, now seen corresponding path program 1 times [2021-01-06 23:35:48,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:48,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554763957] [2021-01-06 23:35:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,929 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 23:35:48,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554763957] [2021-01-06 23:35:48,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:48,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118569790] [2021-01-06 23:35:48,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:35:48,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:35:48,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:35:48,932 INFO L87 Difference]: Start difference. First operand 46 states and 83 transitions. Second operand 3 states. [2021-01-06 23:35:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,939 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2021-01-06 23:35:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:35:48,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 23:35:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,940 INFO L225 Difference]: With dead ends: 59 [2021-01-06 23:35:48,940 INFO L226 Difference]: Without dead ends: 33 [2021-01-06 23:35:48,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:35:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-06 23:35:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-01-06 23:35:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 23:35:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2021-01-06 23:35:48,943 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2021-01-06 23:35:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,943 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2021-01-06 23:35:48,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:35:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2021-01-06 23:35:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:35:48,944 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:48,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:48,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:35:48,944 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:48,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1414383408, now seen corresponding path program 2 times [2021-01-06 23:35:48,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:48,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710229715] [2021-01-06 23:35:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:48,982 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 23:35:48,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710229715] [2021-01-06 23:35:48,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:48,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:48,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713168146] [2021-01-06 23:35:48,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:48,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:48,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:48,985 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2021-01-06 23:35:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:48,997 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-01-06 23:35:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:35:48,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-06 23:35:48,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:48,998 INFO L225 Difference]: With dead ends: 32 [2021-01-06 23:35:48,998 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:35:48,998 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 23:35:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:35:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:35:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:35:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:35:48,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-01-06 23:35:48,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:48,999 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:35:48,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:48,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:35:49,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:35:49,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:35:49,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:35:49 BasicIcfg [2021-01-06 23:35:49,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:35:49,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:35:49,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:35:49,005 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:35:49,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:43" (3/4) ... [2021-01-06 23:35:49,008 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:35:49,015 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:35:49,016 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:35:49,016 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:35:49,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:35:49,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:35:49,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:35:49,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:35:49,063 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe020_pso.oepc.i-witness.graphml [2021-01-06 23:35:49,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:35:49,064 INFO L168 Benchmark]: Toolchain (without parser) took 6905.49 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 107.7 MB in the beginning and 79.5 MB in the end (delta: 28.3 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:49,067 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:35:49,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.87 ms. Allocated memory is still 151.0 MB. Free memory was 107.6 MB in the beginning and 107.1 MB in the end (delta: 463.0 kB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:49,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.19 ms. Allocated memory is still 151.0 MB. Free memory was 107.1 MB in the beginning and 131.2 MB in the end (delta: -24.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:49,069 INFO L168 Benchmark]: Boogie Preprocessor took 65.91 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 129.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:49,069 INFO L168 Benchmark]: RCFGBuilder took 641.18 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 108.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:49,071 INFO L168 Benchmark]: TraceAbstraction took 5320.27 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 107.6 MB in the beginning and 82.1 MB in the end (delta: 25.5 MB). Peak memory consumption was 104.2 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:49,077 INFO L168 Benchmark]: Witness Printer took 58.92 ms. Allocated memory is still 228.6 MB. Free memory was 82.1 MB in the beginning and 79.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:49,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 710.87 ms. Allocated memory is still 151.0 MB. Free memory was 107.6 MB in the beginning and 107.1 MB in the end (delta: 463.0 kB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 101.19 ms. Allocated memory is still 151.0 MB. Free memory was 107.1 MB in the beginning and 131.2 MB in the end (delta: -24.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.91 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 129.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 641.18 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 108.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5320.27 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 107.6 MB in the beginning and 82.1 MB in the end (delta: 25.5 MB). Peak memory consumption was 104.2 MB. Max. memory is 8.0 GB. * Witness Printer took 58.92 ms. Allocated memory is still 228.6 MB. Free memory was 82.1 MB in the beginning and 79.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 727 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 2226 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 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 166 SDtfs, 180 SDslu, 215 SDs, 0 SdLazy, 126 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...