/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:12:09,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:12:09,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:12:09,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:12:09,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:12:09,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:12:09,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:12:09,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:12:09,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:12:09,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:12:09,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:12:09,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:12:09,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:12:09,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:12:09,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:12:09,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:12:09,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:12:09,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:12:09,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:12:09,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:12:09,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:12:09,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:12:09,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:12:09,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:12:09,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:12:09,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:12:09,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:12:09,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:12:09,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:12:09,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:12:09,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:12:09,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:12:09,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:12:09,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:12:09,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:12:09,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:12:09,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:12:09,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:12:09,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:12:09,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:12:09,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:12:09,109 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.epf [2020-10-16 12:12:09,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:12:09,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:12:09,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:12:09,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:12:09,155 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:12:09,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:12:09,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:12:09,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:12:09,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:12:09,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:12:09,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:12:09,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:12:09,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:12:09,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:12:09,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:12:09,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:12:09,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:12:09,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:12:09,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:12:09,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:12:09,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:12:09,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:12:09,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:12:09,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:12:09,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:12:09,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:12:09,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:12:09,160 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:12:09,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:12:09,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:12:09,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:12:09,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:12:09,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:12:09,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:12:09,455 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-10-16 12:12:09,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae3cdb550/ca876dc12fba42698c35ab413cb01477/FLAG8e552affb [2020-10-16 12:12:10,032 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:12:10,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-10-16 12:12:10,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae3cdb550/ca876dc12fba42698c35ab413cb01477/FLAG8e552affb [2020-10-16 12:12:10,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae3cdb550/ca876dc12fba42698c35ab413cb01477 [2020-10-16 12:12:10,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:12:10,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:12:10,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:12:10,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:12:10,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:12:10,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:12:10" (1/1) ... [2020-10-16 12:12:10,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6428aca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:10, skipping insertion in model container [2020-10-16 12:12:10,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:12:10" (1/1) ... [2020-10-16 12:12:10,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:12:10,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:12:10,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:12:10,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:12:11,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:12:11,118 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:12:11,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11 WrapperNode [2020-10-16 12:12:11,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:12:11,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:12:11,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:12:11,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:12:11,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:12:11,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:12:11,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:12:11,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:12:11,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (1/1) ... [2020-10-16 12:12:11,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:12:11,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:12:11,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:12:11,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:12:11,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (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 12:12:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:12:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:12:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:12:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:12:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:12:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:12:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:12:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:12:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:12:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:12:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:12:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:12:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:12:11,278 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 12:12:11,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:12:11,622 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:12:11,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:12:11 BoogieIcfgContainer [2020-10-16 12:12:11,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:12:11,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:12:11,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:12:11,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:12:11,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:12:10" (1/3) ... [2020-10-16 12:12:11,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592593d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:12:11, skipping insertion in model container [2020-10-16 12:12:11,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:12:11" (2/3) ... [2020-10-16 12:12:11,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592593d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:12:11, skipping insertion in model container [2020-10-16 12:12:11,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:12:11" (3/3) ... [2020-10-16 12:12:11,633 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2020-10-16 12:12:11,644 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:12:11,644 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:12:11,651 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:12:11,652 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:12:11,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,693 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:12:11,711 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:12:11,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:12:11,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:12:11,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:12:11,750 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:12:11,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:12:11,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:12:11,750 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:12:11,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:12:11,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:12:11,764 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:12:11,765 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:12:11,768 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:12:11,769 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 12:12:11,810 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 12:12:11,811 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:12:11,819 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 12:12:11,823 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 12:12:13,010 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-16 12:12:13,232 INFO L132 LiptonReduction]: Checked pairs total: 2520 [2020-10-16 12:12:13,232 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-16 12:12:13,238 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-16 12:12:13,264 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 12:12:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 12:12:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:12:13,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:13,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:12:13,275 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:13,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-10-16 12:12:13,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:13,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116573852] [2020-10-16 12:12:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:13,475 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 12:12:13,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116573852] [2020-10-16 12:12:13,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:13,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:12:13,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788512366] [2020-10-16 12:12:13,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:12:13,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:13,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:12:13,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:12:13,502 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 12:12:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:13,556 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-16 12:12:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:12:13,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:12:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:13,573 INFO L225 Difference]: With dead ends: 294 [2020-10-16 12:12:13,573 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:12:13,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:12:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:12:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-16 12:12:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-16 12:12:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-16 12:12:13,642 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-16 12:12:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:13,643 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-16 12:12:13,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:12:13,643 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-16 12:12:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:12:13,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:13,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:12:13,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:12:13,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:13,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:13,645 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-10-16 12:12:13,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:13,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963356613] [2020-10-16 12:12:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:13,737 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 12:12:13,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963356613] [2020-10-16 12:12:13,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:13,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:12:13,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880219844] [2020-10-16 12:12:13,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:12:13,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:13,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:12:13,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:12:13,741 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-16 12:12:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:13,751 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-16 12:12:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:12:13,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 12:12:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:13,754 INFO L225 Difference]: With dead ends: 202 [2020-10-16 12:12:13,754 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 12:12:13,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:12:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 12:12:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 12:12:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 12:12:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 12:12:13,777 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-16 12:12:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:13,777 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 12:12:13,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:12:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 12:12:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:12:13,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:13,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:12:13,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:12:13,779 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:13,780 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-10-16 12:12:13,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:13,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062939984] [2020-10-16 12:12:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:13,824 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 12:12:13,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062939984] [2020-10-16 12:12:13,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:13,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:12:13,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728013580] [2020-10-16 12:12:13,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:12:13,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:13,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:12:13,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:12:13,826 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-16 12:12:13,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:13,843 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-10-16 12:12:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:12:13,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:12:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:13,846 INFO L225 Difference]: With dead ends: 266 [2020-10-16 12:12:13,846 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 12:12:13,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:12:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 12:12:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-16 12:12:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:12:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-10-16 12:12:13,859 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-10-16 12:12:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:13,859 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-10-16 12:12:13,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:12:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-10-16 12:12:13,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:12:13,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:13,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:12:13,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:12:13,861 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:13,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:13,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-10-16 12:12:13,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:13,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895840247] [2020-10-16 12:12:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:13,953 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 12:12:13,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895840247] [2020-10-16 12:12:13,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:13,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:12:13,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115825952] [2020-10-16 12:12:13,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:12:13,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:13,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:12:13,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:12:13,957 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-10-16 12:12:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:13,998 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-10-16 12:12:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:12:14,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 12:12:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:14,002 INFO L225 Difference]: With dead ends: 165 [2020-10-16 12:12:14,002 INFO L226 Difference]: Without dead ends: 113 [2020-10-16 12:12:14,002 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 12:12:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-16 12:12:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-16 12:12:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-16 12:12:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-10-16 12:12:14,010 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-10-16 12:12:14,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:14,010 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-10-16 12:12:14,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:12:14,011 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-10-16 12:12:14,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:12:14,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:14,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:12:14,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:12:14,012 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:14,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:14,013 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-10-16 12:12:14,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:14,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029303470] [2020-10-16 12:12:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:14,067 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 12:12:14,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029303470] [2020-10-16 12:12:14,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:14,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:12:14,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708281325] [2020-10-16 12:12:14,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:12:14,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:14,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:12:14,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:12:14,070 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-10-16 12:12:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:14,107 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-10-16 12:12:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:12:14,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 12:12:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:14,109 INFO L225 Difference]: With dead ends: 111 [2020-10-16 12:12:14,109 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 12:12:14,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:12:14,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 12:12:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-16 12:12:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 12:12:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-10-16 12:12:14,114 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-10-16 12:12:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:14,115 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-10-16 12:12:14,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:12:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-10-16 12:12:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:12:14,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:14,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:12:14,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:12:14,117 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:14,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-10-16 12:12:14,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:14,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489139044] [2020-10-16 12:12:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:14,202 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 12:12:14,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489139044] [2020-10-16 12:12:14,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:14,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:12:14,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546003511] [2020-10-16 12:12:14,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:12:14,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:14,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:12:14,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:12:14,205 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-10-16 12:12:14,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:14,262 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-10-16 12:12:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:12:14,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 12:12:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:14,263 INFO L225 Difference]: With dead ends: 75 [2020-10-16 12:12:14,264 INFO L226 Difference]: Without dead ends: 66 [2020-10-16 12:12:14,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:12:14,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-16 12:12:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-16 12:12:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:12:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-10-16 12:12:14,286 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-10-16 12:12:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:14,286 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-10-16 12:12:14,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:12:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-10-16 12:12:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:12:14,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:14,288 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 12:12:14,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:12:14,288 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:14,289 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-10-16 12:12:14,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:14,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825879257] [2020-10-16 12:12:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:14,357 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 12:12:14,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825879257] [2020-10-16 12:12:14,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:14,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:12:14,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811348924] [2020-10-16 12:12:14,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:12:14,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:14,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:12:14,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:12:14,360 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-10-16 12:12:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:14,385 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-10-16 12:12:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:12:14,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 12:12:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:14,387 INFO L225 Difference]: With dead ends: 85 [2020-10-16 12:12:14,387 INFO L226 Difference]: Without dead ends: 48 [2020-10-16 12:12:14,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:12:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-16 12:12:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-16 12:12:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-16 12:12:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-10-16 12:12:14,390 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-10-16 12:12:14,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:14,391 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-10-16 12:12:14,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:12:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-10-16 12:12:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:12:14,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:14,392 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 12:12:14,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:12:14,392 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:14,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-10-16 12:12:14,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:14,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139842841] [2020-10-16 12:12:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:14,422 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 12:12:14,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139842841] [2020-10-16 12:12:14,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:14,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:12:14,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202098862] [2020-10-16 12:12:14,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:12:14,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:14,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:12:14,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:12:14,425 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-10-16 12:12:14,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:14,443 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-10-16 12:12:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:12:14,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 12:12:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:14,444 INFO L225 Difference]: With dead ends: 73 [2020-10-16 12:12:14,444 INFO L226 Difference]: Without dead ends: 42 [2020-10-16 12:12:14,445 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 12:12:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-16 12:12:14,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-16 12:12:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 12:12:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-16 12:12:14,447 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-10-16 12:12:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:14,448 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-16 12:12:14,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:12:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-16 12:12:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:12:14,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:12:14,449 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 12:12:14,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:12:14,449 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:12:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:12:14,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-10-16 12:12:14,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:12:14,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769726261] [2020-10-16 12:12:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:12:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:12:14,478 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 12:12:14,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769726261] [2020-10-16 12:12:14,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:12:14,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:12:14,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475635112] [2020-10-16 12:12:14,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:12:14,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:12:14,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:12:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:12:14,481 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-10-16 12:12:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:12:14,495 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-16 12:12:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:12:14,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 12:12:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:12:14,496 INFO L225 Difference]: With dead ends: 41 [2020-10-16 12:12:14,496 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:12:14,496 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 12:12:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:12:14,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:12:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:12:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:12:14,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 12:12:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:12:14,498 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:12:14,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:12:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:12:14,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:12:14,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:12:14,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:12:14 BasicIcfg [2020-10-16 12:12:14,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:12:14,504 INFO L168 Benchmark]: Toolchain (without parser) took 4157.91 ms. Allocated memory was 139.5 MB in the beginning and 246.4 MB in the end (delta: 107.0 MB). Free memory was 99.3 MB in the beginning and 181.8 MB in the end (delta: -82.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-16 12:12:14,505 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:12:14,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.24 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 99.1 MB in the beginning and 158.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:12:14,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.41 ms. Allocated memory is still 202.9 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:12:14,507 INFO L168 Benchmark]: Boogie Preprocessor took 24.76 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 155.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:12:14,508 INFO L168 Benchmark]: RCFGBuilder took 409.58 ms. Allocated memory is still 202.9 MB. Free memory was 154.5 MB in the beginning and 132.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:12:14,509 INFO L168 Benchmark]: TraceAbstraction took 2876.51 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 132.0 MB in the beginning and 181.8 MB in the end (delta: -49.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:12:14,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 773.24 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 99.1 MB in the beginning and 158.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.41 ms. Allocated memory is still 202.9 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.76 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 155.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.58 ms. Allocated memory is still 202.9 MB. Free memory was 154.5 MB in the beginning and 132.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2876.51 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 132.0 MB in the beginning and 181.8 MB in the end (delta: -49.8 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 634 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 2520 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 172 SDtfs, 128 SDslu, 202 SDs, 0 SdLazy, 120 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...