/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/safe036_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:39:38,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:39:38,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:39:38,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:39:38,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:39:38,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:39:38,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:39:38,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:39:38,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:39:38,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:39:38,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:39:38,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:39:38,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:39:38,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:39:38,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:39:38,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:39:38,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:39:38,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:39:38,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:39:38,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:39:38,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:39:38,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:39:38,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:39:38,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:39:38,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:39:38,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:39:38,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:39:38,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:39:38,626 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 23:39:38,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:39:38,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:39:38,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:39:38,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:39:38,656 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:39:38,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:39:38,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:39:38,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:39:38,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:39:38,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:39:38,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:39:38,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:39:38,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:39:38,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:39:38,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:39:38,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:39:38,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:39:38,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:39:38,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:39:38,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:39:38,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:39:38,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:39:38,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:39:38,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:39:38,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:39:38,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:39:39,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:39:39,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:39:39,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:39:39,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:39:39,123 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:39:39,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_tso.opt.i [2021-01-06 23:39:39,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b66af22bd/cc13512916504dcc8c7f0dfd15daf8c1/FLAGf17bb6427 [2021-01-06 23:39:39,975 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:39:39,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_tso.opt.i [2021-01-06 23:39:40,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b66af22bd/cc13512916504dcc8c7f0dfd15daf8c1/FLAGf17bb6427 [2021-01-06 23:39:40,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b66af22bd/cc13512916504dcc8c7f0dfd15daf8c1 [2021-01-06 23:39:40,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:39:40,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:39:40,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:39:40,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:39:40,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:39:40,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:40,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b80a895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40, skipping insertion in model container [2021-01-06 23:39:40,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:40,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:39:40,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:39:40,464 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/safe036_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[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~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$tmp_guard1~0,GLOBAL] [2021-01-06 23:39:40,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:39:40,723 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:39:40,738 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:39:40,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:39:40,937 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:39:40,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40 WrapperNode [2021-01-06 23:39:40,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:39:40,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:39:40,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:39:40,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:39:40,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:40,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:40,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:39:40,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:39:40,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:39:40,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:39:41,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:41,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:41,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:41,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:41,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:41,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:41,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (1/1) ... [2021-01-06 23:39:41,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:39:41,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:39:41,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:39:41,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:39:41,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (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 23:39:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:39:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:39:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:39:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:39:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:39:41,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:39:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:39:41,120 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:39:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:39:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:39:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:39:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:39:41,126 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 23:39:41,723 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:39:41,724 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:39:41,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:39:41 BoogieIcfgContainer [2021-01-06 23:39:41,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:39:41,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:39:41,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:39:41,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:39:41,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:39:40" (1/3) ... [2021-01-06 23:39:41,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee637a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:39:41, skipping insertion in model container [2021-01-06 23:39:41,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:39:40" (2/3) ... [2021-01-06 23:39:41,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee637a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:39:41, skipping insertion in model container [2021-01-06 23:39:41,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:39:41" (3/3) ... [2021-01-06 23:39:41,740 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_tso.opt.i [2021-01-06 23:39:41,748 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:39:41,748 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:39:41,754 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:39:41,755 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:39:41,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,807 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,807 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,812 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,814 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,816 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,816 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,826 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:39:41,830 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:39:41,853 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-06 23:39:41,903 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:39:41,904 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:39:41,904 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:39:41,904 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:39:41,904 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:39:41,906 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:39:41,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:39:41,906 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:39:41,931 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:39:41,934 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2021-01-06 23:39:41,938 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2021-01-06 23:39:41,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-01-06 23:39:42,008 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-01-06 23:39:42,008 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:39:42,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-01-06 23:39:42,030 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2021-01-06 23:39:44,449 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:39:44,767 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:39:44,879 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-01-06 23:39:44,887 INFO L131 LiptonReduction]: Checked pairs total: 1354 [2021-01-06 23:39:44,888 INFO L133 LiptonReduction]: Total number of compositions: 55 [2021-01-06 23:39:44,894 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2021-01-06 23:39:44,908 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2021-01-06 23:39:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-01-06 23:39:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 23:39:44,917 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:39:44,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 23:39:44,918 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:39:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:39:44,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1865783441, now seen corresponding path program 1 times [2021-01-06 23:39:44,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:39:44,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647419441] [2021-01-06 23:39:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:39:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:39:45,122 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 23:39:45,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647419441] [2021-01-06 23:39:45,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:39:45,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:39:45,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288824466] [2021-01-06 23:39:45,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:39:45,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:39:45,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:39:45,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:39:45,156 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2021-01-06 23:39:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:39:45,184 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2021-01-06 23:39:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:39:45,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-01-06 23:39:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:39:45,199 INFO L225 Difference]: With dead ends: 90 [2021-01-06 23:39:45,200 INFO L226 Difference]: Without dead ends: 74 [2021-01-06 23:39:45,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:39:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-06 23:39:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-01-06 23:39:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 23:39:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2021-01-06 23:39:45,252 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2021-01-06 23:39:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:39:45,252 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2021-01-06 23:39:45,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:39:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2021-01-06 23:39:45,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 23:39:45,254 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:39:45,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:39:45,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:39:45,255 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:39:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:39:45,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2004756257, now seen corresponding path program 1 times [2021-01-06 23:39:45,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:39:45,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889052590] [2021-01-06 23:39:45,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:39:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:39:45,427 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 23:39:45,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889052590] [2021-01-06 23:39:45,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:39:45,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:39:45,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182156767] [2021-01-06 23:39:45,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:39:45,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:39:45,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:39:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:39:45,440 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2021-01-06 23:39:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:39:45,489 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2021-01-06 23:39:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:39:45,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-06 23:39:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:39:45,493 INFO L225 Difference]: With dead ends: 63 [2021-01-06 23:39:45,493 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 23:39:45,494 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 23:39:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 23:39:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-06 23:39:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 23:39:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2021-01-06 23:39:45,512 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2021-01-06 23:39:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:39:45,512 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2021-01-06 23:39:45,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:39:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2021-01-06 23:39:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:39:45,514 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:39:45,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:39:45,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:39:45,514 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:39:45,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:39:45,515 INFO L82 PathProgramCache]: Analyzing trace with hash 531180577, now seen corresponding path program 1 times [2021-01-06 23:39:45,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:39:45,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504539363] [2021-01-06 23:39:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:39:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:39:45,655 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 23:39:45,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504539363] [2021-01-06 23:39:45,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:39:45,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:39:45,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169741458] [2021-01-06 23:39:45,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:39:45,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:39:45,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:39:45,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:39:45,663 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2021-01-06 23:39:45,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:39:45,706 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2021-01-06 23:39:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:39:45,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:39:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:39:45,711 INFO L225 Difference]: With dead ends: 36 [2021-01-06 23:39:45,711 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 23:39:45,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 23:39:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 23:39:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-01-06 23:39:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-06 23:39:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2021-01-06 23:39:45,727 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2021-01-06 23:39:45,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:39:45,727 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-01-06 23:39:45,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:39:45,727 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2021-01-06 23:39:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:39:45,731 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:39:45,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:39:45,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:39:45,732 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:39:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:39:45,732 INFO L82 PathProgramCache]: Analyzing trace with hash 2005536794, now seen corresponding path program 1 times [2021-01-06 23:39:45,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:39:45,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658792147] [2021-01-06 23:39:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:39:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:39:45,842 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 23:39:45,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658792147] [2021-01-06 23:39:45,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:39:45,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:39:45,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137375126] [2021-01-06 23:39:45,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:39:45,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:39:45,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:39:45,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:39:45,846 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2021-01-06 23:39:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:39:45,878 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2021-01-06 23:39:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:39:45,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:39:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:39:45,879 INFO L225 Difference]: With dead ends: 37 [2021-01-06 23:39:45,879 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 23:39:45,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:39:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 23:39:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-01-06 23:39:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 23:39:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-01-06 23:39:45,885 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2021-01-06 23:39:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:39:45,885 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-01-06 23:39:45,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:39:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-01-06 23:39:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:39:45,887 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:39:45,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:39:45,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:39:45,887 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:39:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:39:45,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1560668438, now seen corresponding path program 2 times [2021-01-06 23:39:45,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:39:45,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979866215] [2021-01-06 23:39:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:39:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:39:45,965 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 23:39:45,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979866215] [2021-01-06 23:39:45,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:39:45,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:39:45,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427942763] [2021-01-06 23:39:45,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:39:45,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:39:45,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:39:45,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:39:45,969 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2021-01-06 23:39:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:39:45,994 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-01-06 23:39:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:39:45,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:39:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:39:45,999 INFO L225 Difference]: With dead ends: 16 [2021-01-06 23:39:45,999 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:39:46,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:39:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:39:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:39:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:39:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:39:46,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-01-06 23:39:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:39:46,005 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:39:46,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:39:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:39:46,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:39:46,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:39:46,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:39:46 BasicIcfg [2021-01-06 23:39:46,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:39:46,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:39:46,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:39:46,012 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:39:46,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:39:41" (3/4) ... [2021-01-06 23:39:46,017 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:39:46,025 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:39:46,025 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:39:46,031 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-01-06 23:39:46,031 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:39:46,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:39:46,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:39:46,094 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe036_tso.opt.i-witness.graphml [2021-01-06 23:39:46,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:39:46,096 INFO L168 Benchmark]: Toolchain (without parser) took 5882.71 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 134.6 MB in the beginning and 108.1 MB in the end (delta: 26.5 MB). Peak memory consumption was 69.5 MB. Max. memory is 8.0 GB. [2021-01-06 23:39:46,097 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:39:46,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.33 ms. Allocated memory is still 160.4 MB. Free memory was 134.3 MB in the beginning and 134.8 MB in the end (delta: -540.7 kB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2021-01-06 23:39:46,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.90 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 132.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:39:46,105 INFO L168 Benchmark]: Boogie Preprocessor took 29.68 ms. Allocated memory is still 160.4 MB. Free memory was 132.7 MB in the beginning and 131.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:39:46,105 INFO L168 Benchmark]: RCFGBuilder took 706.32 ms. Allocated memory is still 160.4 MB. Free memory was 131.7 MB in the beginning and 110.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:39:46,108 INFO L168 Benchmark]: TraceAbstraction took 4279.44 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 110.2 MB in the beginning and 110.7 MB in the end (delta: -524.3 kB). Peak memory consumption was 42.5 MB. Max. memory is 8.0 GB. [2021-01-06 23:39:46,108 INFO L168 Benchmark]: Witness Printer took 83.05 ms. Allocated memory is still 202.4 MB. Free memory was 110.2 MB in the beginning and 108.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:39:46,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 723.33 ms. Allocated memory is still 160.4 MB. Free memory was 134.3 MB in the beginning and 134.8 MB in the end (delta: -540.7 kB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.90 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 132.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.68 ms. Allocated memory is still 160.4 MB. Free memory was 132.7 MB in the beginning and 131.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 706.32 ms. Allocated memory is still 160.4 MB. Free memory was 131.7 MB in the beginning and 110.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4279.44 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 110.2 MB in the beginning and 110.7 MB in the end (delta: -524.3 kB). Peak memory consumption was 42.5 MB. Max. memory is 8.0 GB. * Witness Printer took 83.05 ms. Allocated memory is still 202.4 MB. Free memory was 110.2 MB in the beginning and 108.1 MB in the end (delta: 2.1 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 465 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1354 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 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 63 SDtfs, 62 SDslu, 83 SDs, 0 SdLazy, 34 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...