/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:36:41,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:36:41,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:36:41,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:36:41,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:36:41,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:36:41,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:36:41,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:36:41,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:36:41,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:36:41,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:36:41,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:36:41,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:36:41,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:36:41,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:36:41,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:36:41,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:36:41,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:36:41,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:36:41,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:36:41,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:36:41,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:36:41,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:36:41,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:36:41,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:36:41,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:36:41,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:36:41,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:36:41,328 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 23:36:41,366 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:36:41,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:36:41,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:36:41,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:36:41,368 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:36:41,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:36:41,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:36:41,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:36:41,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:36:41,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:36:41,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:36:41,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:36:41,370 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:36:41,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:36:41,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:36:41,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:36:41,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:36:41,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:36:41,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:36:41,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:36:41,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:36:41,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:36:41,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:36:41,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:36:41,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:36:41,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:36:41,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:36:41,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:36:41,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:36:41,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:36:41,794 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:36:41,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2021-01-06 23:36:41,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a38886d5b/4a5d44413d20496abbe83a7210bbcba1/FLAG649e7d859 [2021-01-06 23:36:42,744 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:36:42,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2021-01-06 23:36:42,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a38886d5b/4a5d44413d20496abbe83a7210bbcba1/FLAG649e7d859 [2021-01-06 23:36:42,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a38886d5b/4a5d44413d20496abbe83a7210bbcba1 [2021-01-06 23:36:42,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:36:42,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:36:42,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:36:42,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:36:42,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:36:42,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:42" (1/1) ... [2021-01-06 23:36:42,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4fcbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:42, skipping insertion in model container [2021-01-06 23:36:42,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:42" (1/1) ... [2021-01-06 23:36:42,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:36:43,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:36:43,229 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/safe023_tso.opt.i[949,962] 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[~y~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[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:36:43,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:36:43,470 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:36:43,485 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:36:43,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:36:43,675 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:36:43,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43 WrapperNode [2021-01-06 23:36:43,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:36:43,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:36:43,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:36:43,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:36:43,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:36:43,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:36:43,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:36:43,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:36:43,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (1/1) ... [2021-01-06 23:36:43,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:36:43,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:36:43,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:36:43,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:36:43,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (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 23:36:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:36:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:36:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:36:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:36:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:36:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:36:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:36:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:36:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:36:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:36:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:36:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:36:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:36:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:36:43,897 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 23:36:44,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:36:44,471 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:36:44,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:44 BoogieIcfgContainer [2021-01-06 23:36:44,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:36:44,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:36:44,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:36:44,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:36:44,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:36:42" (1/3) ... [2021-01-06 23:36:44,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cf049f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:44, skipping insertion in model container [2021-01-06 23:36:44,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:43" (2/3) ... [2021-01-06 23:36:44,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cf049f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:44, skipping insertion in model container [2021-01-06 23:36:44,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:44" (3/3) ... [2021-01-06 23:36:44,483 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-01-06 23:36:44,491 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:36:44,491 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:36:44,497 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:36:44,498 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:36:44,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,541 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,541 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,541 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,541 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,542 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,542 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,542 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,543 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,543 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,543 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,543 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,544 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,544 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,544 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,544 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,544 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,545 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,545 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,545 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,545 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,546 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,546 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,546 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,546 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,547 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,547 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,548 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,548 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,548 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,548 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,551 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,552 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,558 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,558 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,558 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,558 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,562 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:36:44,565 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:36:44,588 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:36:44,613 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:36:44,613 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:36:44,613 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:36:44,613 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:36:44,613 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:36:44,613 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:36:44,614 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:36:44,614 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:36:44,627 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:36:44,629 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-01-06 23:36:44,632 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-01-06 23:36:44,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-01-06 23:36:44,678 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-01-06 23:36:44,679 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:36:44,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-01-06 23:36:44,690 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-01-06 23:36:47,303 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 23:36:47,495 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 23:36:48,456 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 23:36:48,576 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-01-06 23:36:48,803 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 23:36:48,972 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2021-01-06 23:36:48,972 INFO L133 LiptonReduction]: Total number of compositions: 63 [2021-01-06 23:36:48,980 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-01-06 23:36:49,018 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2021-01-06 23:36:49,020 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2021-01-06 23:36:49,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:36:49,029 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:36:49,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:36:49,030 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:36:49,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:36:49,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2021-01-06 23:36:49,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:36:49,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697443837] [2021-01-06 23:36:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:36:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:36:49,362 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 23:36:49,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697443837] [2021-01-06 23:36:49,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:36:49,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-06 23:36:49,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546595854] [2021-01-06 23:36:49,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:36:49,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:36:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:36:49,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:36:49,393 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2021-01-06 23:36:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:36:49,462 INFO L93 Difference]: Finished difference Result 499 states and 1376 transitions. [2021-01-06 23:36:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:36:49,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-01-06 23:36:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:36:49,483 INFO L225 Difference]: With dead ends: 499 [2021-01-06 23:36:49,483 INFO L226 Difference]: Without dead ends: 317 [2021-01-06 23:36:49,484 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 23:36:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-01-06 23:36:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 272. [2021-01-06 23:36:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2021-01-06 23:36:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 685 transitions. [2021-01-06 23:36:49,565 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 685 transitions. Word has length 8 [2021-01-06 23:36:49,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:36:49,566 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 685 transitions. [2021-01-06 23:36:49,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:36:49,566 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 685 transitions. [2021-01-06 23:36:49,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:36:49,568 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:36:49,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:36:49,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:36:49,569 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:36:49,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:36:49,569 INFO L82 PathProgramCache]: Analyzing trace with hash 695087089, now seen corresponding path program 1 times [2021-01-06 23:36:49,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:36:49,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963269625] [2021-01-06 23:36:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:36:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:36:49,716 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 23:36:49,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963269625] [2021-01-06 23:36:49,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:36:49,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:36:49,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797753046] [2021-01-06 23:36:49,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:36:49,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:36:49,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:36:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:36:49,721 INFO L87 Difference]: Start difference. First operand 272 states and 685 transitions. Second operand 4 states. [2021-01-06 23:36:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:36:49,749 INFO L93 Difference]: Finished difference Result 254 states and 605 transitions. [2021-01-06 23:36:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:36:49,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:36:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:36:49,753 INFO L225 Difference]: With dead ends: 254 [2021-01-06 23:36:49,753 INFO L226 Difference]: Without dead ends: 218 [2021-01-06 23:36:49,754 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 23:36:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-01-06 23:36:49,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 192. [2021-01-06 23:36:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-01-06 23:36:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 465 transitions. [2021-01-06 23:36:49,774 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 465 transitions. Word has length 9 [2021-01-06 23:36:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:36:49,774 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 465 transitions. [2021-01-06 23:36:49,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:36:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 465 transitions. [2021-01-06 23:36:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:36:49,776 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:36:49,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:36:49,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:36:49,777 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:36:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:36:49,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2042757351, now seen corresponding path program 1 times [2021-01-06 23:36:49,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:36:49,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818674867] [2021-01-06 23:36:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:36:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:36:49,921 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 23:36:49,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818674867] [2021-01-06 23:36:49,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:36:49,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:36:49,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812387908] [2021-01-06 23:36:49,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:36:49,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:36:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:36:49,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:36:49,932 INFO L87 Difference]: Start difference. First operand 192 states and 465 transitions. Second operand 4 states. [2021-01-06 23:36:49,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:36:49,981 INFO L93 Difference]: Finished difference Result 246 states and 577 transitions. [2021-01-06 23:36:49,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:36:49,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:36:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:36:49,987 INFO L225 Difference]: With dead ends: 246 [2021-01-06 23:36:49,987 INFO L226 Difference]: Without dead ends: 186 [2021-01-06 23:36:49,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 23:36:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-01-06 23:36:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2021-01-06 23:36:50,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2021-01-06 23:36:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 405 transitions. [2021-01-06 23:36:50,029 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 405 transitions. Word has length 11 [2021-01-06 23:36:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:36:50,029 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 405 transitions. [2021-01-06 23:36:50,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:36:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 405 transitions. [2021-01-06 23:36:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:36:50,031 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:36:50,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:36:50,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:36:50,032 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:36:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:36:50,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2042769348, now seen corresponding path program 1 times [2021-01-06 23:36:50,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:36:50,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212709725] [2021-01-06 23:36:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:36:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:36:50,175 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 23:36:50,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212709725] [2021-01-06 23:36:50,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:36:50,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:36:50,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698071684] [2021-01-06 23:36:50,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:36:50,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:36:50,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:36:50,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:36:50,181 INFO L87 Difference]: Start difference. First operand 170 states and 405 transitions. Second operand 4 states. [2021-01-06 23:36:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:36:50,208 INFO L93 Difference]: Finished difference Result 182 states and 423 transitions. [2021-01-06 23:36:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:36:50,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:36:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:36:50,211 INFO L225 Difference]: With dead ends: 182 [2021-01-06 23:36:50,212 INFO L226 Difference]: Without dead ends: 182 [2021-01-06 23:36:50,212 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 23:36:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-01-06 23:36:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 140. [2021-01-06 23:36:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-01-06 23:36:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 328 transitions. [2021-01-06 23:36:50,223 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 328 transitions. Word has length 11 [2021-01-06 23:36:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:36:50,223 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 328 transitions. [2021-01-06 23:36:50,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:36:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 328 transitions. [2021-01-06 23:36:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:36:50,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:36:50,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:36:50,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:36:50,226 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:36:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:36:50,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1140142386, now seen corresponding path program 1 times [2021-01-06 23:36:50,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:36:50,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205657668] [2021-01-06 23:36:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:36:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:36:50,311 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 23:36:50,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205657668] [2021-01-06 23:36:50,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:36:50,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:36:50,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025608330] [2021-01-06 23:36:50,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:36:50,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:36:50,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:36:50,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:36:50,316 INFO L87 Difference]: Start difference. First operand 140 states and 328 transitions. Second operand 5 states. [2021-01-06 23:36:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:36:50,343 INFO L93 Difference]: Finished difference Result 142 states and 313 transitions. [2021-01-06 23:36:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:36:50,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:36:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:36:50,344 INFO L225 Difference]: With dead ends: 142 [2021-01-06 23:36:50,345 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 23:36:50,345 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 23:36:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 23:36:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-01-06 23:36:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 23:36:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 171 transitions. [2021-01-06 23:36:50,349 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 171 transitions. Word has length 12 [2021-01-06 23:36:50,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:36:50,350 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 171 transitions. [2021-01-06 23:36:50,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:36:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 171 transitions. [2021-01-06 23:36:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:36:50,352 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:36:50,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:36:50,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:36:50,353 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:36:50,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:36:50,353 INFO L82 PathProgramCache]: Analyzing trace with hash -301354668, now seen corresponding path program 1 times [2021-01-06 23:36:50,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:36:50,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401640780] [2021-01-06 23:36:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:36:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:36:50,411 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 23:36:50,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401640780] [2021-01-06 23:36:50,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:36:50,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:36:50,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600540078] [2021-01-06 23:36:50,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:36:50,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:36:50,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:36:50,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:36:50,414 INFO L87 Difference]: Start difference. First operand 82 states and 171 transitions. Second operand 4 states. [2021-01-06 23:36:50,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:36:50,439 INFO L93 Difference]: Finished difference Result 88 states and 172 transitions. [2021-01-06 23:36:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:36:50,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 23:36:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:36:50,441 INFO L225 Difference]: With dead ends: 88 [2021-01-06 23:36:50,441 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 23:36:50,442 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 23:36:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 23:36:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-01-06 23:36:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-06 23:36:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 138 transitions. [2021-01-06 23:36:50,445 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 138 transitions. Word has length 13 [2021-01-06 23:36:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:36:50,445 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 138 transitions. [2021-01-06 23:36:50,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:36:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 138 transitions. [2021-01-06 23:36:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:36:50,447 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:36:50,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:36:50,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:36:50,447 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:36:50,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:36:50,448 INFO L82 PathProgramCache]: Analyzing trace with hash 150538107, now seen corresponding path program 1 times [2021-01-06 23:36:50,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:36:50,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465627364] [2021-01-06 23:36:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:36:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:36:50,518 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 23:36:50,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465627364] [2021-01-06 23:36:50,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:36:50,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:36:50,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987294816] [2021-01-06 23:36:50,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:36:50,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:36:50,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:36:50,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:36:50,523 INFO L87 Difference]: Start difference. First operand 71 states and 138 transitions. Second operand 5 states. [2021-01-06 23:36:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:36:50,566 INFO L93 Difference]: Finished difference Result 67 states and 127 transitions. [2021-01-06 23:36:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:36:50,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 23:36:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:36:50,567 INFO L225 Difference]: With dead ends: 67 [2021-01-06 23:36:50,567 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 23:36:50,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:36:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 23:36:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-01-06 23:36:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-06 23:36:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 110 transitions. [2021-01-06 23:36:50,575 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 110 transitions. Word has length 14 [2021-01-06 23:36:50,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:36:50,575 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 110 transitions. [2021-01-06 23:36:50,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:36:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 110 transitions. [2021-01-06 23:36:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:36:50,577 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:36:50,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:36:50,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:36:50,577 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:36:50,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:36:50,578 INFO L82 PathProgramCache]: Analyzing trace with hash 791467962, now seen corresponding path program 1 times [2021-01-06 23:36:50,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:36:50,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151451840] [2021-01-06 23:36:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:36:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:36:50,640 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 23:36:50,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151451840] [2021-01-06 23:36:50,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:36:50,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:36:50,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076950568] [2021-01-06 23:36:50,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:36:50,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:36:50,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:36:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:36:50,644 INFO L87 Difference]: Start difference. First operand 58 states and 110 transitions. Second operand 6 states. [2021-01-06 23:36:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:36:50,680 INFO L93 Difference]: Finished difference Result 55 states and 107 transitions. [2021-01-06 23:36:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:36:50,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 23:36:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:36:50,682 INFO L225 Difference]: With dead ends: 55 [2021-01-06 23:36:50,682 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:36:50,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:36:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:36:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:36:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:36:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:36:50,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-01-06 23:36:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:36:50,683 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:36:50,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:36:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:36:50,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:36:50,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:36:50,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:36:50 BasicIcfg [2021-01-06 23:36:50,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:36:50,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:36:50,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:36:50,689 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:36:50,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:44" (3/4) ... [2021-01-06 23:36:50,694 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:36:50,702 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:36:50,702 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:36:50,702 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:36:50,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:36:50,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:36:50,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:36:50,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:36:50,754 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe023_tso.opt.i-witness.graphml [2021-01-06 23:36:50,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:36:50,756 INFO L168 Benchmark]: Toolchain (without parser) took 7791.30 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 124.9 MB in the beginning and 114.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 78.6 MB. Max. memory is 8.0 GB. [2021-01-06 23:36:50,757 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:36:50,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 126.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:36:50,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.68 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 124.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:36:50,759 INFO L168 Benchmark]: Boogie Preprocessor took 28.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 123.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:36:50,759 INFO L168 Benchmark]: RCFGBuilder took 716.77 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 101.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:36:50,760 INFO L168 Benchmark]: TraceAbstraction took 6212.75 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 101.1 MB in the beginning and 117.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 52.7 MB. Max. memory is 8.0 GB. [2021-01-06 23:36:50,761 INFO L168 Benchmark]: Witness Printer took 65.68 ms. Allocated memory is still 219.2 MB. Free memory was 117.0 MB in the beginning and 114.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:36:50,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 126.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.68 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 124.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 123.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 716.77 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 101.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6212.75 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 101.1 MB in the beginning and 117.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 52.7 MB. Max. memory is 8.0 GB. * Witness Printer took 65.68 ms. Allocated memory is still 219.2 MB. Free memory was 117.0 MB in the beginning and 114.4 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 850 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 133 SDtfs, 183 SDslu, 132 SDs, 0 SdLazy, 70 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 8 MinimizatonAttempts, 129 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 4234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...