/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-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:40:30,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:40:30,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:40:30,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-01-06 23:40:30,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:40:30,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:40:30,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:40:30,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:40:30,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:40:30,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:40:30,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:40:30,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:40:30,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:40:30,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:40:30,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:40:30,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:40:30,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:40:30,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:40:30,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:40:30,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:40:30,549 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 23:40:30,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:40:30,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:40:30,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:40:30,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:40:30,576 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:40:30,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:40:30,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:40:30,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:40:30,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:40:30,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:40:30,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:40:30,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:40:30,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:40:30,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:40:30,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:40:30,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:40:30,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:40:30,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:40:30,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:40:30,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:40:30,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:40:30,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:40:30,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:40:30,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:40:30,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:40:30,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:40:30,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:40:30,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:40:30,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:40:30,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:40:30,978 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:40:30,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/qw2004-1.i [2021-01-06 23:40:31,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cda1bf89a/fd8fd0799e944370a6b67a8a2b31999d/FLAGe524bc2fb [2021-01-06 23:40:31,814 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:40:31,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-1.i [2021-01-06 23:40:31,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cda1bf89a/fd8fd0799e944370a6b67a8a2b31999d/FLAGe524bc2fb [2021-01-06 23:40:32,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cda1bf89a/fd8fd0799e944370a6b67a8a2b31999d [2021-01-06 23:40:32,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:40:32,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:40:32,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:40:32,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:40:32,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:40:32,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3575a62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32, skipping insertion in model container [2021-01-06 23:40:32,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:40:32,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:40:32,560 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-lit/qw2004-1.i[30003,30016] left hand side expression in assignment: lhs: VariableLHS[~pendingIo~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pending~0,] left hand side expression in assignment: lhs: VariableLHS[~stoppingEvent~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~status~0,] left hand side expression in assignment: lhs: VariableLHS[~stoppingFlag~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~stopped~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pendingIo~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~stoppingFlag~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~stoppingEvent~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~stopped~0,GLOBAL] [2021-01-06 23:40:32,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:40:32,594 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:40:32,635 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-lit/qw2004-1.i[30003,30016] left hand side expression in assignment: lhs: VariableLHS[~pendingIo~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pending~0,] left hand side expression in assignment: lhs: VariableLHS[~stoppingEvent~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~status~0,] left hand side expression in assignment: lhs: VariableLHS[~stoppingFlag~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~stopped~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pendingIo~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~stoppingFlag~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~stoppingEvent~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~stopped~0,GLOBAL] [2021-01-06 23:40:32,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:40:32,802 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:40:32,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32 WrapperNode [2021-01-06 23:40:32,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:40:32,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:40:32,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:40:32,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:40:32,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:40:32,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:40:32,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:40:32,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:40:32,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... [2021-01-06 23:40:32,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:40:32,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:40:32,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:40:32,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:40:32,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:40:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-01-06 23:40:33,074 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-01-06 23:40:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:40:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:40:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:40:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:40:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:40:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:40:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:40:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:40:33,077 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 23:40:33,612 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:40:33,613 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-01-06 23:40:33,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:40:33 BoogieIcfgContainer [2021-01-06 23:40:33,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:40:33,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:40:33,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:40:33,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:40:33,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:40:32" (1/3) ... [2021-01-06 23:40:33,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335888ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:40:33, skipping insertion in model container [2021-01-06 23:40:33,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:40:32" (2/3) ... [2021-01-06 23:40:33,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335888ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:40:33, skipping insertion in model container [2021-01-06 23:40:33,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:40:33" (3/3) ... [2021-01-06 23:40:33,624 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2021-01-06 23:40:33,630 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:40:33,630 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:40:33,635 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:40:33,636 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:40:33,664 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,664 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,664 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,664 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,665 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,665 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,665 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,665 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,666 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,666 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,666 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,666 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,666 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,667 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,667 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,667 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,667 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,667 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,668 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,668 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,668 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,668 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,669 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,669 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,669 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,669 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,669 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,670 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,670 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,670 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,670 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,670 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,671 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,671 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,671 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,671 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,672 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,672 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,672 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,672 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,672 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,673 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,673 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,673 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,674 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,674 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,674 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,674 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,675 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,675 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,675 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,675 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,675 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,676 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,676 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,676 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,679 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,680 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,680 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,680 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,681 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,681 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,682 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,682 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,682 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:40:33,684 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:40:33,703 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 23:40:33,726 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:40:33,727 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:40:33,727 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:40:33,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:40:33,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:40:33,727 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:40:33,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:40:33,728 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:40:33,741 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:40:33,743 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 91 transitions, 187 flow [2021-01-06 23:40:33,747 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 91 transitions, 187 flow [2021-01-06 23:40:33,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 187 flow [2021-01-06 23:40:33,796 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-01-06 23:40:33,797 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:40:33,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 6/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2021-01-06 23:40:33,807 INFO L116 LiptonReduction]: Number of co-enabled transitions 2208 [2021-01-06 23:40:37,252 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2021-01-06 23:40:37,254 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 23:40:37,264 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2021-01-06 23:40:37,265 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 23:40:37,325 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2021-01-06 23:40:37,326 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 23:40:37,333 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2021-01-06 23:40:37,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 23:40:37,771 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-01-06 23:40:38,026 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-01-06 23:40:38,373 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2021-01-06 23:40:38,374 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 23:40:38,381 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2021-01-06 23:40:38,382 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 23:40:38,392 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2021-01-06 23:40:38,393 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 23:40:38,400 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2021-01-06 23:40:38,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 23:40:38,407 INFO L131 LiptonReduction]: Checked pairs total: 2537 [2021-01-06 23:40:38,407 INFO L133 LiptonReduction]: Total number of compositions: 102 [2021-01-06 23:40:38,414 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 14 transitions, 33 flow [2021-01-06 23:40:38,423 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 32 states. [2021-01-06 23:40:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-01-06 23:40:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-06 23:40:38,431 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:38,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-06 23:40:38,432 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:38,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:38,438 INFO L82 PathProgramCache]: Analyzing trace with hash 11541918, now seen corresponding path program 1 times [2021-01-06 23:40:38,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:38,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059607831] [2021-01-06 23:40:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:38,699 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 23:40:38,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059607831] [2021-01-06 23:40:38,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:38,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-06 23:40:38,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552622825] [2021-01-06 23:40:38,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:40:38,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:38,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:40:38,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:40:38,731 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2021-01-06 23:40:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:38,764 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2021-01-06 23:40:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:40:38,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-06 23:40:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:38,775 INFO L225 Difference]: With dead ends: 31 [2021-01-06 23:40:38,775 INFO L226 Difference]: Without dead ends: 13 [2021-01-06 23:40:38,777 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 23:40:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-01-06 23:40:38,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-01-06 23:40:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-06 23:40:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-01-06 23:40:38,839 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 4 [2021-01-06 23:40:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:38,840 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-01-06 23:40:38,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:40:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-01-06 23:40:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:40:38,841 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:38,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:38,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:40:38,841 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:38,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:38,842 INFO L82 PathProgramCache]: Analyzing trace with hash -907954422, now seen corresponding path program 1 times [2021-01-06 23:40:38,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:38,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496609966] [2021-01-06 23:40:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:38,940 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 23:40:38,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496609966] [2021-01-06 23:40:38,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:38,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:40:38,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041063899] [2021-01-06 23:40:38,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:40:38,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:38,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:40:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:40:38,944 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 6 states. [2021-01-06 23:40:39,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:39,011 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-01-06 23:40:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:40:39,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 23:40:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:39,012 INFO L225 Difference]: With dead ends: 16 [2021-01-06 23:40:39,012 INFO L226 Difference]: Without dead ends: 12 [2021-01-06 23:40:39,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:40:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-01-06 23:40:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-01-06 23:40:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-01-06 23:40:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-01-06 23:40:39,017 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2021-01-06 23:40:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:39,017 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-01-06 23:40:39,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:40:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-01-06 23:40:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:40:39,018 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:40:39,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:40:39,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:40:39,019 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:40:39,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:40:39,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1323538872, now seen corresponding path program 2 times [2021-01-06 23:40:39,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:40:39,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853866050] [2021-01-06 23:40:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:40:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:40:39,100 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 23:40:39,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853866050] [2021-01-06 23:40:39,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:40:39,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:40:39,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758696450] [2021-01-06 23:40:39,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:40:39,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:40:39,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:40:39,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:40:39,108 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2021-01-06 23:40:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:40:39,140 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-01-06 23:40:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:40:39,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-01-06 23:40:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:40:39,141 INFO L225 Difference]: With dead ends: 11 [2021-01-06 23:40:39,142 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:40:39,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:40:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:40:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:40:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:40:39,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:40:39,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-01-06 23:40:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:40:39,145 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:40:39,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:40:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:40:39,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:40:39,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:40:39,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:40:39 BasicIcfg [2021-01-06 23:40:39,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:40:39,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:40:39,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:40:39,155 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:40:39,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:40:33" (3/4) ... [2021-01-06 23:40:39,161 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:40:39,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure BCSP_PnpStop [2021-01-06 23:40:39,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-01-06 23:40:39,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-01-06 23:40:39,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:40:39,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:40:39,268 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-lit/qw2004-1.i-witness.graphml [2021-01-06 23:40:39,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:40:39,270 INFO L168 Benchmark]: Toolchain (without parser) took 7206.84 ms. Allocated memory was 151.0 MB in the beginning and 248.5 MB in the end (delta: 97.5 MB). Free memory was 124.4 MB in the beginning and 195.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:39,270 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:40:39,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.37 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 126.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:39,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 124.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:39,272 INFO L168 Benchmark]: Boogie Preprocessor took 63.10 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 122.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:39,276 INFO L168 Benchmark]: RCFGBuilder took 650.16 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 96.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:39,276 INFO L168 Benchmark]: TraceAbstraction took 5537.02 ms. Allocated memory was 151.0 MB in the beginning and 248.5 MB in the end (delta: 97.5 MB). Free memory was 96.1 MB in the beginning and 198.3 MB in the end (delta: -102.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:40:39,277 INFO L168 Benchmark]: Witness Printer took 113.72 ms. Allocated memory is still 248.5 MB. Free memory was 198.3 MB in the beginning and 195.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:40:39,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 738.37 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 126.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 95.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 124.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.10 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 122.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 650.16 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 96.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5537.02 ms. Allocated memory was 151.0 MB in the beginning and 248.5 MB in the end (delta: 97.5 MB). Free memory was 96.1 MB in the beginning and 198.3 MB in the end (delta: -102.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 113.72 ms. Allocated memory is still 248.5 MB. Free memory was 198.3 MB in the beginning and 195.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1575 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 41 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 89 PlacesBefore, 16 PlacesAfterwards, 91 TransitionsBefore, 14 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 8 FixpointIterations, 18 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 4 ChoiceCompositions, 102 TotalNumberOfCompositions, 2537 MoverChecksTotal - PositiveResult [Line: 690]: 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 2 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 28 SDtfs, 16 SDslu, 24 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...