/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-c7e336b [2020-10-06 01:13:15,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:13:15,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:13:15,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:13:15,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:13:15,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:13:15,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:13:15,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:13:15,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:13:15,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:13:15,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:13:15,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:13:15,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:13:15,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:13:15,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:13:15,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:13:15,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:13:15,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:13:15,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:13:15,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:13:15,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:13:15,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:13:15,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:13:15,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:13:15,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:13:15,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:13:15,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:13:15,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:13:15,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:13:15,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:13:15,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:13:15,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:13:15,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:13:15,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:13:15,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:13:15,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:13:15,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:13:15,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:13:15,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:13:15,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:13:15,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:13:15,846 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:13:15,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:13:15,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:13:15,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:13:15,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:13:15,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:13:15,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:13:15,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:13:15,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:13:15,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:13:15,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:13:15,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:13:15,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:13:15,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:13:15,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:13:15,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:13:15,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:13:15,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:13:15,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:13:15,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:13:15,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:13:15,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:13:15,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:13:15,850 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:13:15,851 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:13:15,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:13:15,851 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:13:16,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:13:16,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:13:16,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:13:16,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:13:16,195 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:13:16,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2020-10-06 01:13:16,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dad815cb/3421dfcd41734e1eaaea850617d4d9bb/FLAGb5f83e5d6 [2020-10-06 01:13:16,818 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:13:16,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2020-10-06 01:13:16,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dad815cb/3421dfcd41734e1eaaea850617d4d9bb/FLAGb5f83e5d6 [2020-10-06 01:13:17,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dad815cb/3421dfcd41734e1eaaea850617d4d9bb [2020-10-06 01:13:17,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:13:17,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:13:17,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:13:17,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:13:17,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:13:17,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:17,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c6b50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17, skipping insertion in model container [2020-10-06 01:13:17,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:17,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:13:17,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:13:17,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:13:17,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:13:17,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:13:17,920 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:13:17,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17 WrapperNode [2020-10-06 01:13:17,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:13:17,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:13:17,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:13:17,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:13:17,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:17,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:17,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:13:17,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:13:17,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:13:17,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:13:17,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:17,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:17,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:17,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:17,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:18,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:18,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... [2020-10-06 01:13:18,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:13:18,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:13:18,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:13:18,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:13:18,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 01:13:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:13:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:13:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:13:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:13:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:13:18,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:13:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:13:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:13:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:13:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:13:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:13:18,068 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:13:18,380 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:13:18,380 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:13:18,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:13:18 BoogieIcfgContainer [2020-10-06 01:13:18,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:13:18,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:13:18,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:13:18,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:13:18,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:13:17" (1/3) ... [2020-10-06 01:13:18,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2139b92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:13:18, skipping insertion in model container [2020-10-06 01:13:18,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:17" (2/3) ... [2020-10-06 01:13:18,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2139b92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:13:18, skipping insertion in model container [2020-10-06 01:13:18,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:13:18" (3/3) ... [2020-10-06 01:13:18,392 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_pso.oepc.i [2020-10-06 01:13:18,404 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:13:18,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:13:18,412 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:13:18,413 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:13:18,441 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,441 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,441 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,453 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,459 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,460 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:18,477 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-06 01:13:18,499 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:13:18,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:13:18,499 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:13:18,500 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:13:18,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:13:18,500 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:13:18,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:13:18,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:13:18,515 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-10-06 01:13:18,517 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-06 01:13:18,557 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-06 01:13:18,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:13:18,562 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. [2020-10-06 01:13:18,564 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-06 01:13:18,585 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-06 01:13:18,585 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:13:18,587 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. [2020-10-06 01:13:18,593 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-10-06 01:13:18,597 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:13:19,844 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-10-06 01:13:19,844 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-10-06 01:13:19,848 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-10-06 01:13:19,862 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-06 01:13:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-06 01:13:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-06 01:13:19,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:19,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-06 01:13:19,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-10-06 01:13:19,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:19,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710794803] [2020-10-06 01:13:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:20,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710794803] [2020-10-06 01:13:20,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:20,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:13:20,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [935352540] [2020-10-06 01:13:20,143 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:20,146 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:20,159 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-06 01:13:20,160 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:20,165 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:20,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:20,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:20,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:20,182 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-10-06 01:13:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:20,235 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-10-06 01:13:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:13:20,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-06 01:13:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:20,247 INFO L225 Difference]: With dead ends: 63 [2020-10-06 01:13:20,247 INFO L226 Difference]: Without dead ends: 40 [2020-10-06 01:13:20,248 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 [2020-10-06 01:13:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-06 01:13:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-06 01:13:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-06 01:13:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-06 01:13:20,290 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-10-06 01:13:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:20,291 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-06 01:13:20,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-06 01:13:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:13:20,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:20,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:20,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:13:20,293 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:20,293 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-10-06 01:13:20,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:20,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314038419] [2020-10-06 01:13:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:20,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314038419] [2020-10-06 01:13:20,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:20,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:20,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1821972636] [2020-10-06 01:13:20,370 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:20,372 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:20,375 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:13:20,375 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:20,375 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:20,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:13:20,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:20,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:13:20,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:20,378 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-10-06 01:13:20,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:20,420 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-10-06 01:13:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:13:20,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-06 01:13:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:20,422 INFO L225 Difference]: With dead ends: 35 [2020-10-06 01:13:20,422 INFO L226 Difference]: Without dead ends: 28 [2020-10-06 01:13:20,423 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 [2020-10-06 01:13:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-06 01:13:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-06 01:13:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-06 01:13:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-10-06 01:13:20,428 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-10-06 01:13:20,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:20,428 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-06 01:13:20,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:13:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-10-06 01:13:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:13:20,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:20,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:20,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:13:20,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:20,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-10-06 01:13:20,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:20,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657015566] [2020-10-06 01:13:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:20,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657015566] [2020-10-06 01:13:20,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:20,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:20,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1606887378] [2020-10-06 01:13:20,482 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:20,483 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:20,487 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-10-06 01:13:20,487 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:20,500 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:20,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:20,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:20,501 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-10-06 01:13:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:20,518 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-10-06 01:13:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:13:20,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:13:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:20,519 INFO L225 Difference]: With dead ends: 35 [2020-10-06 01:13:20,519 INFO L226 Difference]: Without dead ends: 22 [2020-10-06 01:13:20,520 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 [2020-10-06 01:13:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-06 01:13:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-06 01:13:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-06 01:13:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-10-06 01:13:20,524 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-10-06 01:13:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:20,524 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-10-06 01:13:20,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-10-06 01:13:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:13:20,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:20,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:20,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:13:20,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:20,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 2 times [2020-10-06 01:13:20,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:20,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720550953] [2020-10-06 01:13:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:20,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720550953] [2020-10-06 01:13:20,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:20,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:20,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [910399430] [2020-10-06 01:13:20,588 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:20,591 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:20,597 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-06 01:13:20,597 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:20,664 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:20,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:20,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:20,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:20,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:20,665 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-10-06 01:13:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:20,676 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-10-06 01:13:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:13:20,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:13:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:20,677 INFO L225 Difference]: With dead ends: 21 [2020-10-06 01:13:20,677 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:13:20,677 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 [2020-10-06 01:13:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:13:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:13:20,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:13:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:13:20,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-06 01:13:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:20,679 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:13:20,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:13:20,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:13:20,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:13:20,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:13:20 BasicIcfg [2020-10-06 01:13:20,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:13:20,686 INFO L168 Benchmark]: Toolchain (without parser) took 3480.32 ms. Allocated memory was 140.0 MB in the beginning and 248.0 MB in the end (delta: 108.0 MB). Free memory was 101.4 MB in the beginning and 162.6 MB in the end (delta: -61.2 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:20,687 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-06 01:13:20,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.15 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 159.4 MB in the end (delta: -58.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:20,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.26 ms. Allocated memory is still 201.9 MB. Free memory was 158.7 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:20,690 INFO L168 Benchmark]: Boogie Preprocessor took 28.47 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:20,691 INFO L168 Benchmark]: RCFGBuilder took 377.08 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 135.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:20,692 INFO L168 Benchmark]: TraceAbstraction took 2299.56 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 134.8 MB in the beginning and 162.6 MB in the end (delta: -27.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:20,696 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.15 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 159.4 MB in the end (delta: -58.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.26 ms. Allocated memory is still 201.9 MB. Free memory was 158.7 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.47 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 377.08 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 135.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2299.56 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 134.8 MB in the beginning and 162.6 MB in the end (delta: -27.8 MB). Peak memory consumption was 18.3 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: 2.1s, 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, 0.0s 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, 0.0s SatisfiabilityAnalysisTime, 0.2s 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...