/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 01:11:56,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 01:11:56,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 01:11:56,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 01:11:56,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 01:11:56,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 01:11:56,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 01:11:56,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 01:11:56,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 01:11:56,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 01:11:56,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 01:11:56,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 01:11:56,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 01:11:56,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 01:11:56,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 01:11:56,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 01:11:56,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 01:11:56,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 01:11:56,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 01:11:56,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 01:11:56,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 01:11:56,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 01:11:56,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 01:11:56,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 01:11:56,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 01:11:56,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 01:11:56,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 01:11:56,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 01:11:56,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 01:11:56,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 01:11:56,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 01:11:56,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 01:11:56,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 01:11:56,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 01:11:56,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 01:11:56,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 01:11:56,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 01:11:56,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 01:11:56,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 01:11:56,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 01:11:56,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 01:11:56,111 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 01:11:56,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 01:11:56,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 01:11:56,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 01:11:56,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 01:11:56,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 01:11:56,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 01:11:56,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 01:11:56,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 01:11:56,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 01:11:56,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 01:11:56,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 01:11:56,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 01:11:56,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 01:11:56,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 01:11:56,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 01:11:56,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 01:11:56,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:11:56,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 01:11:56,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 01:11:56,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 01:11:56,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 01:11:56,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 01:11:56,116 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 01:11:56,116 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 01:11:56,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 01:11:56,117 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 01:11:56,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 01:11:56,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 01:11:56,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 01:11:56,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 01:11:56,629 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 01:11:56,631 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2020-09-16 01:11:56,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/797ea5332/774cfd75a67245338dc9bf955b6522a9/FLAG22a22c33c [2020-09-16 01:11:57,372 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 01:11:57,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2020-09-16 01:11:57,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/797ea5332/774cfd75a67245338dc9bf955b6522a9/FLAG22a22c33c [2020-09-16 01:11:57,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/797ea5332/774cfd75a67245338dc9bf955b6522a9 [2020-09-16 01:11:57,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 01:11:57,630 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 01:11:57,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 01:11:57,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 01:11:57,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 01:11:57,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:11:57" (1/1) ... [2020-09-16 01:11:57,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4056ff15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:57, skipping insertion in model container [2020-09-16 01:11:57,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:11:57" (1/1) ... [2020-09-16 01:11:57,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 01:11:57,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 01:11:58,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:11:58,340 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 01:11:58,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:11:58,474 INFO L208 MainTranslator]: Completed translation [2020-09-16 01:11:58,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58 WrapperNode [2020-09-16 01:11:58,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 01:11:58,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 01:11:58,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 01:11:58,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 01:11:58,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 01:11:58,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 01:11:58,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 01:11:58,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 01:11:58,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... [2020-09-16 01:11:58,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 01:11:58,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 01:11:58,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 01:11:58,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 01:11:58,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:11:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 01:11:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 01:11:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 01:11:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 01:11:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 01:11:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 01:11:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 01:11:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 01:11:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 01:11:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 01:11:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 01:11:58,665 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 01:11:58,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 01:11:58,984 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 01:11:58,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:11:58 BoogieIcfgContainer [2020-09-16 01:11:58,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 01:11:58,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 01:11:58,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 01:11:58,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 01:11:58,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 01:11:57" (1/3) ... [2020-09-16 01:11:58,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403aceaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:11:58, skipping insertion in model container [2020-09-16 01:11:58,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:58" (2/3) ... [2020-09-16 01:11:58,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403aceaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:11:58, skipping insertion in model container [2020-09-16 01:11:58,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:11:58" (3/3) ... [2020-09-16 01:11:58,999 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_pso.oepc.i [2020-09-16 01:11:59,011 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 01:11:59,011 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 01:11:59,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 01:11:59,023 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 01:11:59,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,057 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,063 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,063 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,073 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,073 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,073 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:59,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-16 01:11:59,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:11:59,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:11:59,125 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:11:59,125 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:11:59,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:11:59,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:11:59,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:11:59,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:11:59,143 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-09-16 01:11:59,145 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-16 01:11:59,194 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-16 01:11:59,197 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:11:59,204 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 01:11:59,208 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-16 01:11:59,227 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-16 01:11:59,227 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:11:59,228 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 01:11:59,229 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-16 01:11:59,231 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:12:00,499 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-09-16 01:12:00,500 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-16 01:12:00,505 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-16 01:12:00,522 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-16 01:12:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-16 01:12:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-16 01:12:00,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:12:00,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-16 01:12:00,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:12:00,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:12:00,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-09-16 01:12:00,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:12:00,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257907763] [2020-09-16 01:12:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:12:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:12:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:12:00,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257907763] [2020-09-16 01:12:00,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:12:00,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:12:00,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1140072474] [2020-09-16 01:12:00,861 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:12:00,864 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:12:00,881 INFO L274 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-09-16 01:12:00,881 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:12:00,884 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:12:00,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:12:00,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:12:00,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:12:00,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:12:00,907 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-09-16 01:12:00,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:12:00,966 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-09-16 01:12:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:12:00,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-09-16 01:12:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:12:00,981 INFO L225 Difference]: With dead ends: 63 [2020-09-16 01:12:00,981 INFO L226 Difference]: Without dead ends: 40 [2020-09-16 01:12:00,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:12:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-16 01:12:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-16 01:12:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-16 01:12:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-09-16 01:12:01,031 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-09-16 01:12:01,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:12:01,031 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-09-16 01:12:01,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:12:01,032 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-09-16 01:12:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 01:12:01,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:12:01,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:12:01,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 01:12:01,033 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:12:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:12:01,034 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-09-16 01:12:01,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:12:01,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333934355] [2020-09-16 01:12:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:12:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:12:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:12:01,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333934355] [2020-09-16 01:12:01,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:12:01,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:12:01,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1737145572] [2020-09-16 01:12:01,129 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:12:01,130 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:12:01,132 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-16 01:12:01,133 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:12:01,133 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:12:01,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 01:12:01,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:12:01,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 01:12:01,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:12:01,136 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-09-16 01:12:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:12:01,181 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-09-16 01:12:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:12:01,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-16 01:12:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:12:01,183 INFO L225 Difference]: With dead ends: 35 [2020-09-16 01:12:01,183 INFO L226 Difference]: Without dead ends: 28 [2020-09-16 01:12:01,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:12:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-16 01:12:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-16 01:12:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-16 01:12:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-09-16 01:12:01,189 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-09-16 01:12:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:12:01,190 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-09-16 01:12:01,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 01:12:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-09-16 01:12:01,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:12:01,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:12:01,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:12:01,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 01:12:01,191 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:12:01,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:12:01,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-09-16 01:12:01,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:12:01,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468040609] [2020-09-16 01:12:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:12:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:12:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:12:01,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468040609] [2020-09-16 01:12:01,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:12:01,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:12:01,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1811290661] [2020-09-16 01:12:01,302 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:12:01,303 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:12:01,310 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-09-16 01:12:01,311 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:12:01,327 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:12:01,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:12:01,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:12:01,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:12:01,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:12:01,329 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-09-16 01:12:01,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:12:01,348 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-09-16 01:12:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:12:01,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:12:01,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:12:01,349 INFO L225 Difference]: With dead ends: 35 [2020-09-16 01:12:01,349 INFO L226 Difference]: Without dead ends: 22 [2020-09-16 01:12:01,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:12:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-16 01:12:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-16 01:12:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-16 01:12:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-16 01:12:01,354 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-09-16 01:12:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:12:01,354 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-16 01:12:01,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:12:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-16 01:12:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:12:01,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:12:01,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:12:01,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 01:12:01,356 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:12:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:12:01,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 2 times [2020-09-16 01:12:01,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:12:01,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620167290] [2020-09-16 01:12:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:12:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:12:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:12:01,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620167290] [2020-09-16 01:12:01,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:12:01,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:12:01,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1769819212] [2020-09-16 01:12:01,434 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:12:01,437 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:12:01,442 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-16 01:12:01,442 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:12:01,505 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:12:01,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:12:01,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:12:01,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:12:01,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:12:01,507 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-09-16 01:12:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:12:01,520 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-16 01:12:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:12:01,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:12:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:12:01,521 INFO L225 Difference]: With dead ends: 21 [2020-09-16 01:12:01,521 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 01:12:01,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:12:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 01:12:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 01:12:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 01:12:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 01:12:01,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-16 01:12:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:12:01,523 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 01:12:01,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:12:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 01:12:01,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 01:12:01,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 01:12:01,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 01:12:01 BasicIcfg [2020-09-16 01:12:01,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 01:12:01,532 INFO L168 Benchmark]: Toolchain (without parser) took 3903.04 ms. Allocated memory was 145.2 MB in the beginning and 251.7 MB in the end (delta: 106.4 MB). Free memory was 100.1 MB in the beginning and 167.8 MB in the end (delta: -67.8 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:01,533 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-16 01:12:01,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 843.09 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.4 MB in the beginning and 158.9 MB in the end (delta: -59.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:01,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.86 ms. Allocated memory is still 201.9 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:01,536 INFO L168 Benchmark]: Boogie Preprocessor took 35.66 ms. Allocated memory is still 201.9 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:01,537 INFO L168 Benchmark]: RCFGBuilder took 419.69 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 135.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:01,538 INFO L168 Benchmark]: TraceAbstraction took 2537.60 ms. Allocated memory was 201.9 MB in the beginning and 251.7 MB in the end (delta: 49.8 MB). Free memory was 135.1 MB in the beginning and 167.8 MB in the end (delta: -32.7 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:01,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 843.09 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.4 MB in the beginning and 158.9 MB in the end (delta: -59.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.86 ms. Allocated memory is still 201.9 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.66 ms. Allocated memory is still 201.9 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.69 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 135.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2537.60 ms. Allocated memory was 201.9 MB in the beginning and 251.7 MB in the end (delta: 49.8 MB). Free memory was 135.1 MB in the beginning and 167.8 MB in the end (delta: -32.7 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 360 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1294 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 56 SDtfs, 43 SDslu, 68 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...