/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:47:49,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:47:49,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:47:49,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:47:49,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:47:49,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:47:49,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:47:49,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:47:49,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:47:49,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:47:49,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:47:49,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:47:49,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:47:49,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:47:49,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:47:49,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:47:49,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:47:49,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:47:49,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:47:49,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:47:49,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:47:49,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:47:49,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:47:49,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:47:49,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:47:49,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:47:49,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:47:49,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:47:49,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:47:49,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:47:49,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:47:49,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:47:49,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:47:49,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:47:49,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:47:49,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:47:49,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:47:49,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:47:49,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:47:49,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:47:49,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:47:49,389 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 13:47:49,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:47:49,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:47:49,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:47:49,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:47:49,434 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:47:49,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:47:49,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:47:49,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:47:49,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:47:49,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:47:49,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:47:49,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:47:49,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:47:49,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:47:49,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:47:49,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:47:49,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:47:49,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:47:49,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:47:49,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:47:49,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:47:49,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:47:49,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:47:49,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:47:49,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:47:49,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:47:49,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:47:49,440 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:47:49,440 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:47:49,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:47:49,440 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:47:49,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:47:49,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:47:49,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:47:49,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:47:49,737 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:47:49,738 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-16 13:47:49,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bdeac372/1c6c08dc3c9a44469141bdf26533c02c/FLAG09222962b [2020-10-16 13:47:50,436 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:47:50,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-16 13:47:50,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bdeac372/1c6c08dc3c9a44469141bdf26533c02c/FLAG09222962b [2020-10-16 13:47:50,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bdeac372/1c6c08dc3c9a44469141bdf26533c02c [2020-10-16 13:47:50,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:47:50,675 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:47:50,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:47:50,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:47:50,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:47:50,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:50" (1/1) ... [2020-10-16 13:47:50,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de7132b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:50, skipping insertion in model container [2020-10-16 13:47:50,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:50" (1/1) ... [2020-10-16 13:47:50,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:47:50,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:47:51,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:47:51,249 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:47:51,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:47:51,373 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:47:51,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51 WrapperNode [2020-10-16 13:47:51,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:47:51,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:47:51,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:47:51,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:47:51,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:47:51,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:47:51,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:47:51,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:47:51,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (1/1) ... [2020-10-16 13:47:51,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:47:51,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:47:51,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:47:51,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:47:51,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (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 13:47:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:47:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:47:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:47:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:47:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:47:51,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:47:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:47:51,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:47:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:47:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:47:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:47:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:47:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:47:51,542 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 13:47:51,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:47:51,920 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:47:51,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:51 BoogieIcfgContainer [2020-10-16 13:47:51,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:47:51,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:47:51,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:47:51,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:47:51,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:47:50" (1/3) ... [2020-10-16 13:47:51,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d31ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:51, skipping insertion in model container [2020-10-16 13:47:51,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51" (2/3) ... [2020-10-16 13:47:51,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d31ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:51, skipping insertion in model container [2020-10-16 13:47:51,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:51" (3/3) ... [2020-10-16 13:47:51,932 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-10-16 13:47:51,945 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:47:51,945 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:47:51,954 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:47:51,955 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:47:51,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,984 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,984 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,985 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,993 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,994 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:51,994 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,007 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,007 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,008 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,010 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,011 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,011 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:52,013 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:47:52,027 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:47:52,046 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:47:52,046 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:47:52,046 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:47:52,047 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:47:52,047 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:47:52,047 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:47:52,047 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:47:52,047 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:47:52,060 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:47:52,061 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 13:47:52,063 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 13:47:52,065 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 13:47:52,110 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 13:47:52,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:47:52,116 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:47:52,119 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:47:53,300 INFO L132 LiptonReduction]: Checked pairs total: 2465 [2020-10-16 13:47:53,301 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 13:47:53,308 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 13:47:53,341 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 13:47:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 13:47:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:47:53,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:53,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:53,354 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-10-16 13:47:53,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:53,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784585318] [2020-10-16 13:47:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:53,584 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 13:47:53,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784585318] [2020-10-16 13:47:53,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:53,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:47:53,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [34695502] [2020-10-16 13:47:53,589 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:53,593 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:53,605 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:47:53,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:53,610 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:53,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:47:53,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:47:53,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:47:53,624 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 13:47:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:53,648 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 13:47:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:47:53,650 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 13:47:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:53,674 INFO L225 Difference]: With dead ends: 362 [2020-10-16 13:47:53,675 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 13:47:53,676 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 13:47:53,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 13:47:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 13:47:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 13:47:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 13:47:53,755 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 13:47:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:53,756 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 13:47:53,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:47:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 13:47:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:47:53,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:53,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:53,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:47:53,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:53,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-10-16 13:47:53,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:53,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833445044] [2020-10-16 13:47:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:53,871 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 13:47:53,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833445044] [2020-10-16 13:47:53,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:53,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:47:53,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1370985963] [2020-10-16 13:47:53,873 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:53,873 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:53,875 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:47:53,875 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:53,876 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:53,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:47:53,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:53,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:47:53,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:47:53,883 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-16 13:47:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:53,905 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-16 13:47:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:47:53,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:47:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:53,909 INFO L225 Difference]: With dead ends: 217 [2020-10-16 13:47:53,909 INFO L226 Difference]: Without dead ends: 217 [2020-10-16 13:47:53,910 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 13:47:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-16 13:47:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-16 13:47:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 13:47:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-16 13:47:53,928 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-16 13:47:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:53,928 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-16 13:47:53,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:47:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-16 13:47:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:47:53,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:53,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:53,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:47:53,931 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-10-16 13:47:53,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:53,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773156533] [2020-10-16 13:47:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:54,019 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 13:47:54,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773156533] [2020-10-16 13:47:54,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:54,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:47:54,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1675225956] [2020-10-16 13:47:54,021 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:54,021 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:54,023 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 13:47:54,024 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:54,093 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:54,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:47:54,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:54,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:47:54,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:47:54,095 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-10-16 13:47:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:54,122 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-16 13:47:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:47:54,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:47:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:54,124 INFO L225 Difference]: With dead ends: 136 [2020-10-16 13:47:54,124 INFO L226 Difference]: Without dead ends: 136 [2020-10-16 13:47:54,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:47:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-16 13:47:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-16 13:47:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 13:47:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-16 13:47:54,134 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-16 13:47:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:54,134 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-16 13:47:54,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:47:54,134 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-16 13:47:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:47:54,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:54,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:54,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:47:54,137 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:54,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-10-16 13:47:54,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:54,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147979384] [2020-10-16 13:47:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:54,253 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 13:47:54,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147979384] [2020-10-16 13:47:54,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:54,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:47:54,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [794789183] [2020-10-16 13:47:54,255 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:54,256 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:54,259 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-10-16 13:47:54,259 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:54,279 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2835#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:47:54,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:47:54,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:54,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:47:54,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:47:54,280 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-10-16 13:47:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:54,312 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-16 13:47:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:47:54,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 13:47:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:54,313 INFO L225 Difference]: With dead ends: 109 [2020-10-16 13:47:54,314 INFO L226 Difference]: Without dead ends: 109 [2020-10-16 13:47:54,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:47:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-16 13:47:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-16 13:47:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-16 13:47:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-16 13:47:54,320 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-16 13:47:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:54,320 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-16 13:47:54,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:47:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-16 13:47:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:47:54,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:54,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:54,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:47:54,323 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:54,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-10-16 13:47:54,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:54,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404007831] [2020-10-16 13:47:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:54,395 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 13:47:54,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404007831] [2020-10-16 13:47:54,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:54,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:47:54,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2041241785] [2020-10-16 13:47:54,396 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:54,398 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:54,406 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 75 transitions. [2020-10-16 13:47:54,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:54,430 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:54,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:47:54,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:54,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:47:54,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:47:54,432 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-10-16 13:47:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:54,475 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-10-16 13:47:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:47:54,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 13:47:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:54,477 INFO L225 Difference]: With dead ends: 174 [2020-10-16 13:47:54,477 INFO L226 Difference]: Without dead ends: 136 [2020-10-16 13:47:54,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:47:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-16 13:47:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-10-16 13:47:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-16 13:47:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 239 transitions. [2020-10-16 13:47:54,483 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 239 transitions. Word has length 18 [2020-10-16 13:47:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:54,484 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 239 transitions. [2020-10-16 13:47:54,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:47:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 239 transitions. [2020-10-16 13:47:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:47:54,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:54,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:54,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:47:54,486 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:54,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:54,487 INFO L82 PathProgramCache]: Analyzing trace with hash 645557555, now seen corresponding path program 2 times [2020-10-16 13:47:54,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:54,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189493687] [2020-10-16 13:47:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:54,534 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 13:47:54,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189493687] [2020-10-16 13:47:54,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:54,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:47:54,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [66641906] [2020-10-16 13:47:54,536 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:54,538 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:54,546 INFO L258 McrAutomatonBuilder]: Finished intersection with 54 states and 91 transitions. [2020-10-16 13:47:54,547 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:54,557 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:54,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:47:54,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:54,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:47:54,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:47:54,559 INFO L87 Difference]: Start difference. First operand 109 states and 239 transitions. Second operand 4 states. [2020-10-16 13:47:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:54,584 INFO L93 Difference]: Finished difference Result 135 states and 287 transitions. [2020-10-16 13:47:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:47:54,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 13:47:54,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:54,586 INFO L225 Difference]: With dead ends: 135 [2020-10-16 13:47:54,586 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 13:47:54,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:47:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 13:47:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 13:47:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 13:47:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-10-16 13:47:54,589 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 18 [2020-10-16 13:47:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:54,590 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-10-16 13:47:54,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:47:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-10-16 13:47:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:47:54,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:54,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:54,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:47:54,591 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1837863529, now seen corresponding path program 3 times [2020-10-16 13:47:54,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:54,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302071398] [2020-10-16 13:47:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:54,649 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 13:47:54,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302071398] [2020-10-16 13:47:54,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:54,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:47:54,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [260478300] [2020-10-16 13:47:54,650 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:54,653 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:54,678 INFO L258 McrAutomatonBuilder]: Finished intersection with 55 states and 90 transitions. [2020-10-16 13:47:54,678 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:54,695 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:54,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:47:54,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:54,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:47:54,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:47:54,696 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 5 states. [2020-10-16 13:47:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:54,745 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2020-10-16 13:47:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:47:54,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 13:47:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:54,747 INFO L225 Difference]: With dead ends: 89 [2020-10-16 13:47:54,747 INFO L226 Difference]: Without dead ends: 42 [2020-10-16 13:47:54,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:47:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-16 13:47:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-16 13:47:54,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 13:47:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-16 13:47:54,750 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 18 [2020-10-16 13:47:54,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:54,750 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-16 13:47:54,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:47:54,750 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-16 13:47:54,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:47:54,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:54,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:54,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:47:54,752 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:54,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:54,752 INFO L82 PathProgramCache]: Analyzing trace with hash 784811111, now seen corresponding path program 4 times [2020-10-16 13:47:54,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:54,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781349211] [2020-10-16 13:47:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:54,803 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 13:47:54,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781349211] [2020-10-16 13:47:54,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:54,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:47:54,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [802153830] [2020-10-16 13:47:54,805 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:54,807 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:54,817 INFO L258 McrAutomatonBuilder]: Finished intersection with 68 states and 120 transitions. [2020-10-16 13:47:54,817 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:54,835 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:54,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:47:54,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:54,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:47:54,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:47:54,837 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 5 states. [2020-10-16 13:47:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:54,869 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-16 13:47:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:47:54,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 13:47:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:54,870 INFO L225 Difference]: With dead ends: 41 [2020-10-16 13:47:54,870 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:47:54,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:47:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:47:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:47:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:47:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:47:54,872 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 13:47:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:54,872 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:47:54,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:47:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:47:54,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:47:54,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:47:54,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:47:54 BasicIcfg [2020-10-16 13:47:54,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:47:54,879 INFO L168 Benchmark]: Toolchain (without parser) took 4204.54 ms. Allocated memory was 141.0 MB in the beginning and 246.4 MB in the end (delta: 105.4 MB). Free memory was 102.6 MB in the beginning and 174.1 MB in the end (delta: -71.5 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:54,880 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-16 13:47:54,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.89 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 162.5 MB in the end (delta: -60.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:54,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 205.0 MB. Free memory was 162.5 MB in the beginning and 160.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:54,883 INFO L168 Benchmark]: Boogie Preprocessor took 41.66 ms. Allocated memory is still 205.0 MB. Free memory was 160.7 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:54,884 INFO L168 Benchmark]: RCFGBuilder took 456.41 ms. Allocated memory is still 205.0 MB. Free memory was 158.8 MB in the beginning and 136.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:54,885 INFO L168 Benchmark]: TraceAbstraction took 2952.53 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 135.9 MB in the beginning and 174.1 MB in the end (delta: -38.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:54,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.89 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 162.5 MB in the end (delta: -60.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 205.0 MB. Free memory was 162.5 MB in the beginning and 160.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.66 ms. Allocated memory is still 205.0 MB. Free memory was 160.7 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.41 ms. Allocated memory is still 205.0 MB. Free memory was 158.8 MB in the beginning and 136.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2952.53 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 135.9 MB in the beginning and 174.1 MB in the end (delta: -38.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 629 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 39 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 77 PlacesBefore, 32 PlacesAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 2465 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 153 SDtfs, 86 SDslu, 254 SDs, 0 SdLazy, 90 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...