/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/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:34:46,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:34:46,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:34:46,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:34:46,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:34:46,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:34:46,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:34:46,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:34:46,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:34:46,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:34:46,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:34:46,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:34:46,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:34:46,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:34:46,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:34:46,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:34:46,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:34:46,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:34:46,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:34:46,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:34:46,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:34:46,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:34:46,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:34:46,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:34:46,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 13:34:46,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:34:46,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:34:46,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:34:46,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:34:46,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:34:46,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:34:46,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:34:46,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:34:46,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:34:46,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:34:46,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:34:46,421 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 13:34:46,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:34:46,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:34:46,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:34:46,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:34:46,452 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:34:46,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:34:46,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:34:46,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:34:46,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:34:46,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:34:46,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:34:46,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:34:46,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:34:46,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:34:46,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:34:46,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:34:46,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:34:46,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:34:46,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:34:46,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:34:46,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:34:46,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:34:46,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:34:46,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:34:46,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:34:46,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:34:46,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:34:46,457 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:34:46,458 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:34:46,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:34:46,458 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:34:46,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:34:46,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:34:46,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:34:46,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:34:46,770 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:34:46,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-10-16 13:34:46,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65feb6901/ad908534b6494aceae6af370ff0bc0c2/FLAGd611f51dd [2020-10-16 13:34:47,377 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:34:47,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-10-16 13:34:47,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65feb6901/ad908534b6494aceae6af370ff0bc0c2/FLAGd611f51dd [2020-10-16 13:34:47,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65feb6901/ad908534b6494aceae6af370ff0bc0c2 [2020-10-16 13:34:47,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:34:47,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:34:47,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:34:47,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:34:47,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:34:47,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:34:47" (1/1) ... [2020-10-16 13:34:47,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d182b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:47, skipping insertion in model container [2020-10-16 13:34:47,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:34:47" (1/1) ... [2020-10-16 13:34:47,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:34:47,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:34:48,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:34:48,202 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:34:48,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:34:48,363 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:34:48,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48 WrapperNode [2020-10-16 13:34:48,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:34:48,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:34:48,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:34:48,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:34:48,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:34:48,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:34:48,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:34:48,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:34:48,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (1/1) ... [2020-10-16 13:34:48,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:34:48,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:34:48,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:34:48,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:34:48,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (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 13:34:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:34:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:34:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:34:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:34:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:34:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:34:48,587 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:34:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:34:48,587 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:34:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:34:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:34:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:34:48,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:34:48,590 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 13:34:48,994 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:34:48,994 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:34:48,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:34:48 BoogieIcfgContainer [2020-10-16 13:34:48,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:34:49,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:34:49,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:34:49,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:34:49,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:34:47" (1/3) ... [2020-10-16 13:34:49,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29417f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:34:49, skipping insertion in model container [2020-10-16 13:34:49,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:48" (2/3) ... [2020-10-16 13:34:49,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29417f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:34:49, skipping insertion in model container [2020-10-16 13:34:49,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:34:48" (3/3) ... [2020-10-16 13:34:49,011 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-10-16 13:34:49,024 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:34:49,024 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:34:49,032 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:34:49,033 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:34:49,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,063 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,064 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,064 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,065 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,066 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,066 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,067 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,067 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:49,093 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:34:49,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:34:49,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:34:49,137 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:34:49,137 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:34:49,137 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:34:49,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:34:49,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:34:49,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:34:49,138 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:34:49,152 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:34:49,153 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:34:49,155 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:34:49,157 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:34:49,203 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:34:49,203 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:34:49,209 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 46 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 13:34:49,212 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:34:50,756 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-16 13:34:50,756 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 13:34:50,764 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:34:50,793 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:34:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:34:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:34:50,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:50,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:50,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-16 13:34:50,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:50,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745828531] [2020-10-16 13:34:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:51,079 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 13:34:51,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745828531] [2020-10-16 13:34:51,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:51,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:34:51,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [973735996] [2020-10-16 13:34:51,083 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:51,087 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:51,101 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:34:51,101 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:51,104 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:51,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:34:51,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:51,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:34:51,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:51,124 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:34:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:51,166 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 13:34:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:34:51,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:34:51,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:51,185 INFO L225 Difference]: With dead ends: 282 [2020-10-16 13:34:51,185 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 13:34:51,187 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 13:34:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 13:34:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 13:34:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 13:34:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 13:34:51,269 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 13:34:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:51,271 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 13:34:51,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:34:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 13:34:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:34:51,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:51,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:51,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:34:51,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:51,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:51,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-10-16 13:34:51,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:51,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130339823] [2020-10-16 13:34:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:51,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130339823] [2020-10-16 13:34:51,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:51,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:34:51,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1287306409] [2020-10-16 13:34:51,371 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:51,372 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:51,379 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-16 13:34:51,382 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:51,409 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:51,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:34:51,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:51,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:34:51,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:34:51,412 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-16 13:34:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:51,453 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-16 13:34:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:34:51,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:34:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:51,456 INFO L225 Difference]: With dead ends: 242 [2020-10-16 13:34:51,456 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 13:34:51,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:34:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 13:34:51,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 13:34:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 13:34:51,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-16 13:34:51,472 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-16 13:34:51,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:51,472 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-16 13:34:51,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:34:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-16 13:34:51,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:34:51,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:51,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:51,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:34:51,475 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:51,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:51,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-10-16 13:34:51,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:51,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696180225] [2020-10-16 13:34:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:51,536 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 13:34:51,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696180225] [2020-10-16 13:34:51,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:51,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:34:51,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [141019338] [2020-10-16 13:34:51,539 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:51,540 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:51,542 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-16 13:34:51,543 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:51,568 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:51,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:34:51,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:51,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:34:51,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:51,570 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-16 13:34:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:51,588 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-10-16 13:34:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:34:51,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 13:34:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:51,591 INFO L225 Difference]: With dead ends: 138 [2020-10-16 13:34:51,593 INFO L226 Difference]: Without dead ends: 138 [2020-10-16 13:34:51,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 13:34:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-16 13:34:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-16 13:34:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 13:34:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-10-16 13:34:51,615 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-10-16 13:34:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:51,615 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-10-16 13:34:51,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:34:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-10-16 13:34:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:34:51,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:51,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:51,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:34:51,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:51,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:51,619 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 1 times [2020-10-16 13:34:51,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:51,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352301272] [2020-10-16 13:34:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:51,667 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 13:34:51,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352301272] [2020-10-16 13:34:51,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:51,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:34:51,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2007439226] [2020-10-16 13:34:51,668 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:51,670 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:51,672 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 13:34:51,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:51,703 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:51,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:34:51,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:51,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:34:51,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:51,705 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 3 states. [2020-10-16 13:34:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:51,710 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-10-16 13:34:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:34:51,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 13:34:51,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:51,713 INFO L225 Difference]: With dead ends: 134 [2020-10-16 13:34:51,713 INFO L226 Difference]: Without dead ends: 134 [2020-10-16 13:34:51,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 13:34:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-16 13:34:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-16 13:34:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 13:34:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-10-16 13:34:51,723 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-10-16 13:34:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:51,723 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-10-16 13:34:51,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:34:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-10-16 13:34:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:34:51,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:51,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:51,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:34:51,725 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1648184308, now seen corresponding path program 1 times [2020-10-16 13:34:51,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:51,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919482603] [2020-10-16 13:34:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:51,775 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 13:34:51,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919482603] [2020-10-16 13:34:51,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:51,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:34:51,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [325904240] [2020-10-16 13:34:51,776 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:51,778 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:51,782 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-10-16 13:34:51,782 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:51,870 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:51,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:34:51,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:51,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:34:51,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:34:51,872 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-10-16 13:34:51,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:51,919 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-10-16 13:34:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:34:51,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 13:34:51,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:51,922 INFO L225 Difference]: With dead ends: 194 [2020-10-16 13:34:51,922 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 13:34:51,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 13:34:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 13:34:51,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-16 13:34:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 13:34:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-10-16 13:34:51,938 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-10-16 13:34:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:51,938 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-10-16 13:34:51,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:34:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-10-16 13:34:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:34:51,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:51,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:51,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:34:51,944 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:51,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1261556210, now seen corresponding path program 2 times [2020-10-16 13:34:51,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:51,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110284968] [2020-10-16 13:34:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:51,993 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 13:34:51,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110284968] [2020-10-16 13:34:51,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:51,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:34:51,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [733240533] [2020-10-16 13:34:51,995 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:51,996 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:52,000 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-10-16 13:34:52,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:52,054 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:52,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:34:52,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:52,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:34:52,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:34:52,055 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-10-16 13:34:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:52,077 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-10-16 13:34:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:34:52,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 13:34:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:52,078 INFO L225 Difference]: With dead ends: 128 [2020-10-16 13:34:52,078 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 13:34:52,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:34:52,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 13:34:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 13:34:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 13:34:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-16 13:34:52,083 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-10-16 13:34:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:52,083 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-16 13:34:52,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:34:52,084 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-16 13:34:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:34:52,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:52,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:52,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:34:52,085 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 3 times [2020-10-16 13:34:52,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:52,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027662464] [2020-10-16 13:34:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:52,144 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 13:34:52,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027662464] [2020-10-16 13:34:52,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:52,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:34:52,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [773922243] [2020-10-16 13:34:52,145 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:52,146 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:52,150 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 13:34:52,150 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:52,177 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:34:52,205 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:52,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:34:52,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:52,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:34:52,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:34:52,206 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-16 13:34:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:52,236 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-16 13:34:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:34:52,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 13:34:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:52,237 INFO L225 Difference]: With dead ends: 81 [2020-10-16 13:34:52,238 INFO L226 Difference]: Without dead ends: 59 [2020-10-16 13:34:52,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 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 13:34:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-16 13:34:52,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-16 13:34:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-16 13:34:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-16 13:34:52,241 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-16 13:34:52,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:52,242 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-16 13:34:52,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:34:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-16 13:34:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:34:52,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:52,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:52,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:34:52,243 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:52,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:52,244 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-16 13:34:52,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:52,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361116111] [2020-10-16 13:34:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:52,326 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 13:34:52,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361116111] [2020-10-16 13:34:52,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:52,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:34:52,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1072460566] [2020-10-16 13:34:52,332 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:52,333 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:52,338 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 13:34:52,338 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:52,416 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3649#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:34:52,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:34:52,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:52,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:34:52,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:34:52,418 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 6 states. [2020-10-16 13:34:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:52,464 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-16 13:34:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:34:52,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 13:34:52,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:52,467 INFO L225 Difference]: With dead ends: 60 [2020-10-16 13:34:52,467 INFO L226 Difference]: Without dead ends: 45 [2020-10-16 13:34:52,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:34:52,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-16 13:34:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-16 13:34:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-16 13:34:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-16 13:34:52,471 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-16 13:34:52,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:52,473 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-16 13:34:52,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:34:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-16 13:34:52,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:34:52,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:52,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:52,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:34:52,474 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:52,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:52,474 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-16 13:34:52,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:52,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472970947] [2020-10-16 13:34:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:52,562 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 13:34:52,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472970947] [2020-10-16 13:34:52,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:52,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:34:52,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1214292390] [2020-10-16 13:34:52,563 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:52,564 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:52,568 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-16 13:34:52,568 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:52,601 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:34:52,618 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3808#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:34:52,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:34:52,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:52,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:34:52,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:34:52,619 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 7 states. [2020-10-16 13:34:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:52,659 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-16 13:34:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:34:52,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:34:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:52,660 INFO L225 Difference]: With dead ends: 42 [2020-10-16 13:34:52,660 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 13:34:52,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:34:52,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 13:34:52,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 13:34:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 13:34:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 13:34:52,663 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 13:34:52,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:52,663 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 13:34:52,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:34:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 13:34:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:34:52,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:52,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:52,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:34:52,664 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:52,665 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-16 13:34:52,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:52,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723273809] [2020-10-16 13:34:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:52,695 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 13:34:52,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723273809] [2020-10-16 13:34:52,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:52,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:34:52,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1149709140] [2020-10-16 13:34:52,696 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:52,698 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:52,701 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-10-16 13:34:52,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:52,725 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:52,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:34:52,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:52,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:34:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:34:52,727 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-16 13:34:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:52,735 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 13:34:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:34:52,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:34:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:52,736 INFO L225 Difference]: With dead ends: 35 [2020-10-16 13:34:52,736 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:34:52,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 13:34:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:34:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:34:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:34:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:34:52,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:34:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:52,738 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:34:52,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:34:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:34:52,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:34:52,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 13:34:52,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:34:52 BasicIcfg [2020-10-16 13:34:52,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:34:52,744 INFO L168 Benchmark]: Toolchain (without parser) took 5069.66 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 101.3 MB in the beginning and 98.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:52,745 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:34:52,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.67 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 157.9 MB in the end (delta: -56.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:52,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.40 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:52,747 INFO L168 Benchmark]: Boogie Preprocessor took 58.85 ms. Allocated memory is still 202.9 MB. Free memory was 155.8 MB in the beginning and 154.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:52,748 INFO L168 Benchmark]: RCFGBuilder took 490.30 ms. Allocated memory is still 202.9 MB. Free memory was 154.5 MB in the beginning and 131.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:52,749 INFO L168 Benchmark]: TraceAbstraction took 3739.65 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 131.5 MB in the beginning and 98.9 MB in the end (delta: 32.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:52,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.67 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 157.9 MB in the end (delta: -56.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 81.40 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.85 ms. Allocated memory is still 202.9 MB. Free memory was 155.8 MB in the beginning and 154.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.30 ms. Allocated memory is still 202.9 MB. Free memory was 154.5 MB in the beginning and 131.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3739.65 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 131.5 MB in the beginning and 98.9 MB in the end (delta: 32.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 662 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 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: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 180 SDtfs, 107 SDslu, 191 SDs, 0 SdLazy, 122 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 3881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...