/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/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:12:27,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:12:27,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:12:27,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:12:27,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:12:27,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:12:27,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:12:27,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:12:27,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:12:27,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:12:27,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:12:27,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:12:27,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:12:27,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:12:27,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:12:27,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:12:27,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:12:27,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:12:27,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:12:27,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:12:27,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:12:27,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:12:27,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:12:27,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:12:27,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:12:27,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:12:27,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:12:27,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:12:27,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:12:27,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:12:27,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:12:27,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:12:27,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:12:27,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:12:27,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:12:27,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:12:27,912 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 01:12:27,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:12:27,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:12:27,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:12:27,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:12:27,963 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:12:27,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:12:27,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:12:27,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:12:27,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:12:27,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:12:27,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:12:27,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:12:27,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:12:27,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:12:27,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:12:27,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:12:27,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:12:27,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:12:27,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:12:27,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:12:27,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:12:27,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:12:27,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:12:27,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:12:27,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:12:27,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:12:27,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:12:27,969 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:12:27,969 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:12:27,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:12:27,970 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:12:28,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:12:28,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:12:28,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:12:28,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:12:28,286 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:12:28,287 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-06 01:12:28,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d4fcfbc/f03d79e4e9e748da80584a77175a0376/FLAG440509816 [2020-10-06 01:12:28,935 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:12:28,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-06 01:12:28,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d4fcfbc/f03d79e4e9e748da80584a77175a0376/FLAG440509816 [2020-10-06 01:12:29,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d4fcfbc/f03d79e4e9e748da80584a77175a0376 [2020-10-06 01:12:29,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:12:29,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:12:29,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:12:29,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:12:29,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:12:29,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:12:29" (1/1) ... [2020-10-06 01:12:29,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e376dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:29, skipping insertion in model container [2020-10-06 01:12:29,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:12:29" (1/1) ... [2020-10-06 01:12:29,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:12:29,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:12:29,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:12:29,851 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:12:29,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:12:30,011 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:12:30,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30 WrapperNode [2020-10-06 01:12:30,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:12:30,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:12:30,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:12:30,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:12:30,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:12:30,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:12:30,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:12:30,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:12:30,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (1/1) ... [2020-10-06 01:12:30,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:12:30,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:12:30,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:12:30,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:12:30,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (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 01:12:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:12:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:12:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:12:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:12:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:12:30,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:12:30,161 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:12:30,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:12:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:12:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:12:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:12:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:12:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:12:30,165 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 01:12:30,517 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:12:30,517 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:12:30,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:12:30 BoogieIcfgContainer [2020-10-06 01:12:30,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:12:30,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:12:30,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:12:30,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:12:30,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:12:29" (1/3) ... [2020-10-06 01:12:30,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b779f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:12:30, skipping insertion in model container [2020-10-06 01:12:30,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:12:30" (2/3) ... [2020-10-06 01:12:30,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b779f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:12:30, skipping insertion in model container [2020-10-06 01:12:30,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:12:30" (3/3) ... [2020-10-06 01:12:30,529 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-10-06 01:12:30,537 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:12:30,538 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:12:30,545 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:12:30,545 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:12:30,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,577 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,577 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,577 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,577 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,584 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,584 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,585 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,585 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,602 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,603 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,603 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,603 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:12:30,626 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:12:30,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:12:30,645 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:12:30,646 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:12:30,646 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:12:30,646 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:12:30,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:12:30,646 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:12:30,647 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:12:30,661 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-06 01:12:30,663 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-06 01:12:30,707 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-06 01:12:30,707 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:12:30,712 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:12:30,715 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-06 01:12:30,739 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-06 01:12:30,739 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:12:30,740 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:12:30,742 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:12:30,743 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:12:31,093 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-10-06 01:12:32,005 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-10-06 01:12:32,006 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-10-06 01:12:32,010 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-06 01:12:32,039 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-06 01:12:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-06 01:12:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:12:32,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:12:32,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:12:32,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:12:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:12:32,058 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-10-06 01:12:32,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:12:32,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082285224] [2020-10-06 01:12:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:12:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:12:32,283 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 01:12:32,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082285224] [2020-10-06 01:12:32,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:12:32,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:12:32,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1405840700] [2020-10-06 01:12:32,287 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:12:32,290 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:12:32,303 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:12:32,303 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:12:32,307 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:12:32,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-06 01:12:32,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:12:32,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-06 01:12:32,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 01:12:32,323 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-06 01:12:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:12:32,351 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-06 01:12:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-06 01:12:32,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-06 01:12:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:12:32,373 INFO L225 Difference]: With dead ends: 362 [2020-10-06 01:12:32,373 INFO L226 Difference]: Without dead ends: 298 [2020-10-06 01:12:32,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 01:12:32,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-06 01:12:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-06 01:12:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-06 01:12:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-06 01:12:32,466 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-06 01:12:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:12:32,467 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-06 01:12:32,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-06 01:12:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-06 01:12:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:12:32,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:12:32,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:12:32,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:12:32,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:12:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:12:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-10-06 01:12:32,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:12:32,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962573095] [2020-10-06 01:12:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:12:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:12:32,552 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 01:12:32,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962573095] [2020-10-06 01:12:32,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:12:32,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:12:32,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [855016375] [2020-10-06 01:12:32,553 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:12:32,554 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:12:32,556 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:12:32,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:12:32,557 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:12:32,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:12:32,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:12:32,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:12:32,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:12:32,560 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-06 01:12:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:12:32,580 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-06 01:12:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:12:32,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:12:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:12:32,583 INFO L225 Difference]: With dead ends: 217 [2020-10-06 01:12:32,583 INFO L226 Difference]: Without dead ends: 217 [2020-10-06 01:12:32,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:12:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-06 01:12:32,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-06 01:12:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-06 01:12:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-06 01:12:32,605 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-06 01:12:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:12:32,605 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-06 01:12:32,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:12:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-06 01:12:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:12:32,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:12:32,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:12:32,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:12:32,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:12:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:12:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-10-06 01:12:32,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:12:32,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722661164] [2020-10-06 01:12:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:12:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:12:32,678 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 01:12:32,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722661164] [2020-10-06 01:12:32,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:12:32,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:12:32,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1729407483] [2020-10-06 01:12:32,680 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:12:32,681 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:12:32,687 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-06 01:12:32,687 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:12:32,783 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:12:32,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:12:32,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:12:32,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:12:32,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:12:32,784 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-10-06 01:12:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:12:32,809 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-06 01:12:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:12:32,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:12:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:12:32,811 INFO L225 Difference]: With dead ends: 136 [2020-10-06 01:12:32,811 INFO L226 Difference]: Without dead ends: 136 [2020-10-06 01:12:32,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:12:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-06 01:12:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-06 01:12:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-06 01:12:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-06 01:12:32,821 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-06 01:12:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:12:32,821 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-06 01:12:32,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:12:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-06 01:12:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:12:32,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:12:32,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:12:32,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:12:32,824 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:12:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:12:32,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-10-06 01:12:32,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:12:32,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395046022] [2020-10-06 01:12:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:12:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:12:32,913 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 01:12:32,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395046022] [2020-10-06 01:12:32,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:12:32,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:12:32,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [259941427] [2020-10-06 01:12:32,917 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:12:32,918 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:12:32,923 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-10-06 01:12:32,924 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:12:32,962 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2835#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:12:32,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:12:32,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:12:32,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:12:32,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:12:32,964 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-10-06 01:12:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:12:32,998 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-06 01:12:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:12:32,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-06 01:12:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:12:33,000 INFO L225 Difference]: With dead ends: 109 [2020-10-06 01:12:33,000 INFO L226 Difference]: Without dead ends: 109 [2020-10-06 01:12:33,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:12:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-06 01:12:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-06 01:12:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-06 01:12:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-06 01:12:33,007 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-06 01:12:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:12:33,007 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-06 01:12:33,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:12:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-06 01:12:33,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 01:12:33,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:12:33,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:12:33,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:12:33,009 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:12:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:12:33,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-10-06 01:12:33,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:12:33,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636592219] [2020-10-06 01:12:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:12:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:12:33,112 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 01:12:33,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636592219] [2020-10-06 01:12:33,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:12:33,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:12:33,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [607798698] [2020-10-06 01:12:33,115 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:12:33,116 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:12:33,123 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 75 transitions. [2020-10-06 01:12:33,123 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:12:33,144 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:12:33,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:12:33,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:12:33,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:12:33,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:12:33,145 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-10-06 01:12:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:12:33,195 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-10-06 01:12:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:12:33,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-06 01:12:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:12:33,197 INFO L225 Difference]: With dead ends: 174 [2020-10-06 01:12:33,197 INFO L226 Difference]: Without dead ends: 136 [2020-10-06 01:12:33,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:12:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-06 01:12:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-10-06 01:12:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-06 01:12:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 239 transitions. [2020-10-06 01:12:33,204 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 239 transitions. Word has length 18 [2020-10-06 01:12:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:12:33,205 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 239 transitions. [2020-10-06 01:12:33,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:12:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 239 transitions. [2020-10-06 01:12:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 01:12:33,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:12:33,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:12:33,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:12:33,207 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:12:33,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:12:33,207 INFO L82 PathProgramCache]: Analyzing trace with hash 645557555, now seen corresponding path program 2 times [2020-10-06 01:12:33,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:12:33,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039494289] [2020-10-06 01:12:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:12:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:12:33,263 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 01:12:33,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039494289] [2020-10-06 01:12:33,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:12:33,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:12:33,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1181477157] [2020-10-06 01:12:33,264 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:12:33,266 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:12:33,276 INFO L258 McrAutomatonBuilder]: Finished intersection with 54 states and 91 transitions. [2020-10-06 01:12:33,276 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:12:33,287 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:12:33,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:12:33,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:12:33,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:12:33,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:12:33,288 INFO L87 Difference]: Start difference. First operand 109 states and 239 transitions. Second operand 4 states. [2020-10-06 01:12:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:12:33,309 INFO L93 Difference]: Finished difference Result 135 states and 287 transitions. [2020-10-06 01:12:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:12:33,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-06 01:12:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:12:33,311 INFO L225 Difference]: With dead ends: 135 [2020-10-06 01:12:33,311 INFO L226 Difference]: Without dead ends: 55 [2020-10-06 01:12:33,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 01:12:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-06 01:12:33,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-06 01:12:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-06 01:12:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-10-06 01:12:33,315 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 18 [2020-10-06 01:12:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:12:33,315 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-10-06 01:12:33,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:12:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-10-06 01:12:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 01:12:33,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:12:33,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:12:33,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:12:33,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:12:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:12:33,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1837863529, now seen corresponding path program 3 times [2020-10-06 01:12:33,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:12:33,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391840136] [2020-10-06 01:12:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:12:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:12:33,417 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 01:12:33,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391840136] [2020-10-06 01:12:33,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:12:33,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:12:33,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [935663251] [2020-10-06 01:12:33,419 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:12:33,422 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:12:33,432 INFO L258 McrAutomatonBuilder]: Finished intersection with 55 states and 90 transitions. [2020-10-06 01:12:33,433 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:12:33,463 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:12:33,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:12:33,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:12:33,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:12:33,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:12:33,464 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 5 states. [2020-10-06 01:12:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:12:33,512 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2020-10-06 01:12:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:12:33,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-06 01:12:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:12:33,514 INFO L225 Difference]: With dead ends: 89 [2020-10-06 01:12:33,514 INFO L226 Difference]: Without dead ends: 42 [2020-10-06 01:12:33,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-06 01:12:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-06 01:12:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-06 01:12:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 01:12:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-06 01:12:33,517 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 18 [2020-10-06 01:12:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:12:33,518 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-06 01:12:33,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:12:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-06 01:12:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 01:12:33,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:12:33,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:12:33,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:12:33,519 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:12:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:12:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash 784811111, now seen corresponding path program 4 times [2020-10-06 01:12:33,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:12:33,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597751601] [2020-10-06 01:12:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:12:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:12:33,573 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 01:12:33,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597751601] [2020-10-06 01:12:33,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:12:33,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:12:33,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1933462370] [2020-10-06 01:12:33,574 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:12:33,576 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:12:33,587 INFO L258 McrAutomatonBuilder]: Finished intersection with 68 states and 120 transitions. [2020-10-06 01:12:33,587 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:12:33,611 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:12:33,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:12:33,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:12:33,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:12:33,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:12:33,612 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 5 states. [2020-10-06 01:12:33,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:12:33,643 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-06 01:12:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:12:33,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-06 01:12:33,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:12:33,643 INFO L225 Difference]: With dead ends: 41 [2020-10-06 01:12:33,643 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:12:33,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:12:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:12:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:12:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:12:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:12:33,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-06 01:12:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:12:33,645 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:12:33,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:12:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:12:33,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:12:33,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 01:12:33,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:12:33 BasicIcfg [2020-10-06 01:12:33,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:12:33,653 INFO L168 Benchmark]: Toolchain (without parser) took 4436.95 ms. Allocated memory was 147.8 MB in the beginning and 244.8 MB in the end (delta: 97.0 MB). Free memory was 102.4 MB in the beginning and 163.7 MB in the end (delta: -61.3 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:12:33,654 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-06 01:12:33,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 795.37 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 159.5 MB in the end (delta: -57.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:12:33,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.13 ms. Allocated memory is still 205.0 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:12:33,657 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 ms. Allocated memory is still 205.0 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:12:33,657 INFO L168 Benchmark]: RCFGBuilder took 425.75 ms. Allocated memory is still 205.0 MB. Free memory was 156.3 MB in the beginning and 134.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:12:33,658 INFO L168 Benchmark]: TraceAbstraction took 3129.24 ms. Allocated memory was 205.0 MB in the beginning and 244.8 MB in the end (delta: 39.8 MB). Free memory was 133.6 MB in the beginning and 163.7 MB in the end (delta: -30.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-06 01:12:33,663 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 795.37 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 159.5 MB in the end (delta: -57.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.13 ms. Allocated memory is still 205.0 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.61 ms. Allocated memory is still 205.0 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.75 ms. Allocated memory is still 205.0 MB. Free memory was 156.3 MB in the beginning and 134.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3129.24 ms. Allocated memory was 205.0 MB in the beginning and 244.8 MB in the end (delta: 39.8 MB). Free memory was 133.6 MB in the beginning and 163.7 MB in the end (delta: -30.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 620 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 153 SDtfs, 86 SDslu, 254 SDs, 0 SdLazy, 90 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...