/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/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:39:43,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:39:43,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:39:43,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:39:43,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:39:43,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:39:43,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:39:43,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:39:43,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:39:43,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:39:43,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:39:43,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:39:43,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:39:43,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:39:43,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:39:43,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:39:43,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:39:43,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:39:43,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:39:43,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:39:43,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:39:43,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:39:43,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:39:43,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:39:43,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:39:43,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:39:43,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:39:43,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:39:43,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:39:43,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:39:43,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:39:43,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:39:43,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:39:43,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:39:43,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:39:43,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:39:43,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:39:43,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:39:43,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:39:43,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:39:43,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:39:43,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:39:43,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:39:43,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:39:43,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:39:43,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:39:43,122 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:39:43,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:39:43,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:39:43,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:39:43,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:39:43,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:39:43,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:39:43,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:39:43,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:39:43,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:39:43,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:39:43,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:39:43,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:39:43,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:39:43,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:39:43,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:39:43,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:39:43,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:39:43,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:39:43,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:39:43,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:39:43,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:39:43,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:39:43,130 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:39:43,130 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:39:43,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:39:43,130 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:39:43,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:39:43,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:39:43,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:39:43,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:39:43,439 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:39:43,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-16 13:39:43,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f752fd9d/a08c2fb91db54d4fb2b3ffada0dc4104/FLAG0fe167276 [2020-10-16 13:39:44,062 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:39:44,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-16 13:39:44,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f752fd9d/a08c2fb91db54d4fb2b3ffada0dc4104/FLAG0fe167276 [2020-10-16 13:39:44,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f752fd9d/a08c2fb91db54d4fb2b3ffada0dc4104 [2020-10-16 13:39:44,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:39:44,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:39:44,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:39:44,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:39:44,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:39:44,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:44" (1/1) ... [2020-10-16 13:39:44,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f76d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:44, skipping insertion in model container [2020-10-16 13:39:44,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:44" (1/1) ... [2020-10-16 13:39:44,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:39:44,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:39:44,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:39:44,847 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:39:44,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:39:45,023 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:39:45,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45 WrapperNode [2020-10-16 13:39:45,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:39:45,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:39:45,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:39:45,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:39:45,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:39:45,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:39:45,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:39:45,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:39:45,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... [2020-10-16 13:39:45,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:39:45,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:39:45,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:39:45,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:39:45,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:39:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:39:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:39:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:39:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:39:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:39:45,185 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:39:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:39:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:39:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:39:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:39:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 13:39:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 13:39:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:39:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:39:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:39:45,190 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:39:45,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:39:45,608 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:39:45,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:45 BoogieIcfgContainer [2020-10-16 13:39:45,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:39:45,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:39:45,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:39:45,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:39:45,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:39:44" (1/3) ... [2020-10-16 13:39:45,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a532f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:45, skipping insertion in model container [2020-10-16 13:39:45,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:45" (2/3) ... [2020-10-16 13:39:45,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a532f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:45, skipping insertion in model container [2020-10-16 13:39:45,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:45" (3/3) ... [2020-10-16 13:39:45,620 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-10-16 13:39:45,631 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:39:45,632 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:39:45,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:39:45,641 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:39:45,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,679 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,679 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,679 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,680 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,680 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,682 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,685 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,686 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,686 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,686 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,704 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,704 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,704 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:45,706 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:39:45,720 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 13:39:45,738 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:39:45,739 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:39:45,739 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:39:45,739 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:39:45,739 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:39:45,739 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:39:45,739 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:39:45,740 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:39:45,753 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:39:45,754 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:45,757 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:45,759 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:45,808 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 13:39:45,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:39:45,814 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 13:39:45,818 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-16 13:39:47,014 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-16 13:39:47,103 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-16 13:39:47,103 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 13:39:47,110 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-16 13:39:47,164 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-16 13:39:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-16 13:39:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:39:47,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:47,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:47,178 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:47,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-16 13:39:47,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:47,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119177830] [2020-10-16 13:39:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:47,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119177830] [2020-10-16 13:39:47,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:47,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:47,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [839321839] [2020-10-16 13:39:47,388 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:47,391 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:47,406 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 13:39:47,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:47,410 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:47,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:39:47,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:47,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:39:47,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:39:47,428 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-16 13:39:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:47,472 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-16 13:39:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:39:47,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-16 13:39:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:47,498 INFO L225 Difference]: With dead ends: 850 [2020-10-16 13:39:47,499 INFO L226 Difference]: Without dead ends: 706 [2020-10-16 13:39:47,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:39:47,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-16 13:39:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-16 13:39:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-16 13:39:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-16 13:39:47,628 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-16 13:39:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:47,631 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-16 13:39:47,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:39:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-16 13:39:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:39:47,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:47,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:47,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:39:47,639 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:47,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:47,640 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-16 13:39:47,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:47,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251979661] [2020-10-16 13:39:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:47,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251979661] [2020-10-16 13:39:47,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:47,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:47,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [723466792] [2020-10-16 13:39:47,830 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:47,832 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:47,833 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 13:39:47,833 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:47,834 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:47,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:47,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:47,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:47,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:47,837 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-16 13:39:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:47,887 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-16 13:39:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:47,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:39:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:47,893 INFO L225 Difference]: With dead ends: 802 [2020-10-16 13:39:47,894 INFO L226 Difference]: Without dead ends: 658 [2020-10-16 13:39:47,895 INFO L677 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 [2020-10-16 13:39:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-16 13:39:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-16 13:39:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-16 13:39:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-16 13:39:47,922 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-16 13:39:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:47,922 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-16 13:39:47,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-16 13:39:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:39:47,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:47,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:47,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:39:47,926 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:47,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:47,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-10-16 13:39:47,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:47,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935522691] [2020-10-16 13:39:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:47,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935522691] [2020-10-16 13:39:48,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:48,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:48,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [322229199] [2020-10-16 13:39:48,000 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:48,002 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:48,003 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-10-16 13:39:48,004 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:48,010 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:48,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:48,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:48,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:48,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:48,012 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-16 13:39:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:48,049 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-10-16 13:39:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:48,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:39:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:48,055 INFO L225 Difference]: With dead ends: 738 [2020-10-16 13:39:48,056 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 13:39:48,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:48,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 13:39:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-10-16 13:39:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-16 13:39:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-10-16 13:39:48,078 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-10-16 13:39:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:48,078 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-10-16 13:39:48,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-10-16 13:39:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:39:48,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:48,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:48,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:39:48,081 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:48,081 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-10-16 13:39:48,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:48,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387309911] [2020-10-16 13:39:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:48,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387309911] [2020-10-16 13:39:48,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:48,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:48,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1376748467] [2020-10-16 13:39:48,141 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:48,142 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:48,145 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 13:39:48,145 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:48,190 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:48,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:48,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:48,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:48,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:48,191 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-10-16 13:39:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:48,241 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-10-16 13:39:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:48,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 13:39:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:48,247 INFO L225 Difference]: With dead ends: 658 [2020-10-16 13:39:48,247 INFO L226 Difference]: Without dead ends: 578 [2020-10-16 13:39:48,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-16 13:39:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-16 13:39:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-16 13:39:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-16 13:39:48,268 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-16 13:39:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:48,268 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-16 13:39:48,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-16 13:39:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:48,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:48,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:48,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:39:48,271 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:48,271 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-16 13:39:48,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:48,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673548982] [2020-10-16 13:39:48,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:48,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673548982] [2020-10-16 13:39:48,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:48,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:48,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [204008608] [2020-10-16 13:39:48,323 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:48,325 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:48,328 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 43 transitions. [2020-10-16 13:39:48,328 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:48,351 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:48,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:48,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:48,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:48,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:48,352 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-16 13:39:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:48,390 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-16 13:39:48,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:48,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:39:48,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:48,395 INFO L225 Difference]: With dead ends: 814 [2020-10-16 13:39:48,395 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 13:39:48,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 13:39:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-16 13:39:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-16 13:39:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-16 13:39:48,414 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-16 13:39:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:48,415 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-16 13:39:48,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-16 13:39:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:48,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:48,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:48,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:39:48,417 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:48,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:48,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-16 13:39:48,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:48,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215188237] [2020-10-16 13:39:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:48,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215188237] [2020-10-16 13:39:48,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:48,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:48,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1017875830] [2020-10-16 13:39:48,465 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:48,467 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:48,470 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-10-16 13:39:48,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:48,516 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:48,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:48,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:48,518 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 4 states. [2020-10-16 13:39:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:48,541 INFO L93 Difference]: Finished difference Result 562 states and 1746 transitions. [2020-10-16 13:39:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:48,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:39:48,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:48,545 INFO L225 Difference]: With dead ends: 562 [2020-10-16 13:39:48,546 INFO L226 Difference]: Without dead ends: 514 [2020-10-16 13:39:48,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-16 13:39:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-16 13:39:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-16 13:39:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1618 transitions. [2020-10-16 13:39:48,563 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1618 transitions. Word has length 14 [2020-10-16 13:39:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:48,564 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1618 transitions. [2020-10-16 13:39:48,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1618 transitions. [2020-10-16 13:39:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:48,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:48,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:48,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:39:48,566 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:48,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-16 13:39:48,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:48,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346157127] [2020-10-16 13:39:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:48,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346157127] [2020-10-16 13:39:48,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:48,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:39:48,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1077984136] [2020-10-16 13:39:48,619 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:48,621 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:48,626 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-10-16 13:39:48,626 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:48,658 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:48,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:48,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:48,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:48,659 INFO L87 Difference]: Start difference. First operand 514 states and 1618 transitions. Second operand 5 states. [2020-10-16 13:39:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:48,730 INFO L93 Difference]: Finished difference Result 1034 states and 3048 transitions. [2020-10-16 13:39:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 13:39:48,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:39:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:48,735 INFO L225 Difference]: With dead ends: 1034 [2020-10-16 13:39:48,735 INFO L226 Difference]: Without dead ends: 538 [2020-10-16 13:39:48,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:39:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-16 13:39:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 490. [2020-10-16 13:39:48,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-16 13:39:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1446 transitions. [2020-10-16 13:39:48,752 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1446 transitions. Word has length 15 [2020-10-16 13:39:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:48,752 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 1446 transitions. [2020-10-16 13:39:48,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1446 transitions. [2020-10-16 13:39:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:48,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:48,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:48,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:39:48,755 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash 659646890, now seen corresponding path program 1 times [2020-10-16 13:39:48,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:48,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328847463] [2020-10-16 13:39:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:48,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328847463] [2020-10-16 13:39:48,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:48,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:48,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1996865787] [2020-10-16 13:39:48,806 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:48,808 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:48,815 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 75 transitions. [2020-10-16 13:39:48,816 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:48,968 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:48,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:48,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:48,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:48,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:48,969 INFO L87 Difference]: Start difference. First operand 490 states and 1446 transitions. Second operand 5 states. [2020-10-16 13:39:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:49,004 INFO L93 Difference]: Finished difference Result 718 states and 2070 transitions. [2020-10-16 13:39:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:49,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:39:49,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:49,007 INFO L225 Difference]: With dead ends: 718 [2020-10-16 13:39:49,008 INFO L226 Difference]: Without dead ends: 394 [2020-10-16 13:39:49,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:49,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-16 13:39:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-16 13:39:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-16 13:39:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1106 transitions. [2020-10-16 13:39:49,019 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1106 transitions. Word has length 15 [2020-10-16 13:39:49,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:49,020 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1106 transitions. [2020-10-16 13:39:49,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:49,020 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1106 transitions. [2020-10-16 13:39:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:49,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:49,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:49,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:39:49,022 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:49,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:49,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 2 times [2020-10-16 13:39:49,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:49,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052973008] [2020-10-16 13:39:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:49,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052973008] [2020-10-16 13:39:49,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:49,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:49,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1293067690] [2020-10-16 13:39:49,067 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:49,069 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:49,074 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 85 transitions. [2020-10-16 13:39:49,075 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:49,179 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:49,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:49,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:49,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:49,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:49,180 INFO L87 Difference]: Start difference. First operand 394 states and 1106 transitions. Second operand 5 states. [2020-10-16 13:39:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:49,213 INFO L93 Difference]: Finished difference Result 522 states and 1422 transitions. [2020-10-16 13:39:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:49,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:39:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:49,216 INFO L225 Difference]: With dead ends: 522 [2020-10-16 13:39:49,216 INFO L226 Difference]: Without dead ends: 246 [2020-10-16 13:39:49,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-16 13:39:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2020-10-16 13:39:49,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-16 13:39:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 663 transitions. [2020-10-16 13:39:49,224 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 663 transitions. Word has length 15 [2020-10-16 13:39:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:49,224 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 663 transitions. [2020-10-16 13:39:49,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 663 transitions. [2020-10-16 13:39:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:49,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:49,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:49,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:39:49,226 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:49,226 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 3 times [2020-10-16 13:39:49,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:49,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927328697] [2020-10-16 13:39:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:49,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927328697] [2020-10-16 13:39:49,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:49,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:49,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [624503452] [2020-10-16 13:39:49,263 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:49,265 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:49,269 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-10-16 13:39:49,269 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:49,281 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,301 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,311 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,319 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,330 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,341 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,365 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18045#(not (= 4 ~__unbuffered_cnt~0))] [2020-10-16 13:39:49,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:49,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:49,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:49,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:49,367 INFO L87 Difference]: Start difference. First operand 246 states and 663 transitions. Second operand 5 states. [2020-10-16 13:39:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:49,426 INFO L93 Difference]: Finished difference Result 235 states and 555 transitions. [2020-10-16 13:39:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:49,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:39:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:49,428 INFO L225 Difference]: With dead ends: 235 [2020-10-16 13:39:49,428 INFO L226 Difference]: Without dead ends: 166 [2020-10-16 13:39:49,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-16 13:39:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-10-16 13:39:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 13:39:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 363 transitions. [2020-10-16 13:39:49,434 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 363 transitions. Word has length 15 [2020-10-16 13:39:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:49,434 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 363 transitions. [2020-10-16 13:39:49,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 363 transitions. [2020-10-16 13:39:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:39:49,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:49,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:49,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 13:39:49,436 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:49,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:49,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-16 13:39:49,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:49,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353704178] [2020-10-16 13:39:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:49,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353704178] [2020-10-16 13:39:49,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:49,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:39:49,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [667047422] [2020-10-16 13:39:49,485 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:49,487 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:49,493 INFO L258 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-10-16 13:39:49,494 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:49,499 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,528 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,540 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,624 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:49,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:39:49,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:39:49,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:39:49,625 INFO L87 Difference]: Start difference. First operand 166 states and 363 transitions. Second operand 6 states. [2020-10-16 13:39:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:49,689 INFO L93 Difference]: Finished difference Result 142 states and 292 transitions. [2020-10-16 13:39:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:49,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-16 13:39:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:49,690 INFO L225 Difference]: With dead ends: 142 [2020-10-16 13:39:49,691 INFO L226 Difference]: Without dead ends: 103 [2020-10-16 13:39:49,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 13 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-16 13:39:49,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-16 13:39:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-16 13:39:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-16 13:39:49,712 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 17 [2020-10-16 13:39:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:49,712 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-16 13:39:49,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:39:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-16 13:39:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:39:49,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:49,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:49,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 13:39:49,713 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 1 times [2020-10-16 13:39:49,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:49,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145701795] [2020-10-16 13:39:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:49,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145701795] [2020-10-16 13:39:49,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:49,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 13:39:49,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1293346982] [2020-10-16 13:39:49,768 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:49,770 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:49,775 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-10-16 13:39:49,776 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:49,789 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:49,802 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18980#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:39:49,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 13:39:49,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:49,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 13:39:49,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:39:49,803 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 8 states. [2020-10-16 13:39:49,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:49,843 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-16 13:39:49,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:49,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-16 13:39:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:49,843 INFO L225 Difference]: With dead ends: 93 [2020-10-16 13:39:49,844 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:39:49,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:39:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:39:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:39:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:39:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:39:49,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-16 13:39:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:49,845 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:39:49,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 13:39:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:39:49,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:39:49,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 13:39:49,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:39:49 BasicIcfg [2020-10-16 13:39:49,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:39:49,851 INFO L168 Benchmark]: Toolchain (without parser) took 5525.45 ms. Allocated memory was 139.5 MB in the beginning and 289.9 MB in the end (delta: 150.5 MB). Free memory was 100.4 MB in the beginning and 225.6 MB in the end (delta: -125.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:49,852 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:39:49,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.62 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.2 MB in the beginning and 161.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:49,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.49 ms. Allocated memory is still 204.5 MB. Free memory was 161.7 MB in the beginning and 159.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:49,854 INFO L168 Benchmark]: Boogie Preprocessor took 36.23 ms. Allocated memory is still 204.5 MB. Free memory was 159.7 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:49,855 INFO L168 Benchmark]: RCFGBuilder took 500.48 ms. Allocated memory is still 204.5 MB. Free memory was 157.7 MB in the beginning and 134.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:49,856 INFO L168 Benchmark]: TraceAbstraction took 4237.60 ms. Allocated memory was 204.5 MB in the beginning and 289.9 MB in the end (delta: 85.5 MB). Free memory was 133.7 MB in the beginning and 225.6 MB in the end (delta: -92.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:39:49,859 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.62 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.2 MB in the beginning and 161.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.49 ms. Allocated memory is still 204.5 MB. Free memory was 161.7 MB in the beginning and 159.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.23 ms. Allocated memory is still 204.5 MB. Free memory was 159.7 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.48 ms. Allocated memory is still 204.5 MB. Free memory was 157.7 MB in the beginning and 134.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4237.60 ms. Allocated memory was 204.5 MB in the beginning and 289.9 MB in the end (delta: 85.5 MB). Free memory was 133.7 MB in the beginning and 225.6 MB in the end (delta: -92.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 940 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 MoverChecksTotal - 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 331 SDtfs, 290 SDslu, 551 SDs, 0 SdLazy, 191 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 154 SyntacticMatches, 14 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 128 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 6500 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...