/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:04:11,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:04:11,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:04:11,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:04:11,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:04:11,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:04:11,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:04:11,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:04:11,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:04:11,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:04:11,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:04:11,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:04:11,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:04:11,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:04:11,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:04:11,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:04:11,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:04:11,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:04:11,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:04:11,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:04:11,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:04:11,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:04:11,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:04:11,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:04:11,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 15:04:11,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:04:11,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:04:11,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:04:11,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:04:11,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:04:11,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:04:11,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:04:11,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:04:11,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:04:11,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:04:11,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:04:11,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 15:04:11,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:04:11,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:04:11,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:04:11,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:04:11,401 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:04:11,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:04:11,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:04:11,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:04:11,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:04:11,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:04:11,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:04:11,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:04:11,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:04:11,404 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:04:11,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:04:11,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:04:11,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:04:11,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:04:11,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:04:11,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:04:11,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:04:11,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:04:11,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:04:11,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:04:11,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:04:11,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:04:11,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:04:11,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:04:11,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:04:11,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:04:11,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:04:11,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:04:11,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:04:11,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:04:11,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:04:11,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-10-11 15:04:11,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9c121ba2/76ebac1515c14abbb2fffa67b7b17641/FLAGff418991e [2020-10-11 15:04:12,315 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:04:12,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-10-11 15:04:12,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9c121ba2/76ebac1515c14abbb2fffa67b7b17641/FLAGff418991e [2020-10-11 15:04:12,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9c121ba2/76ebac1515c14abbb2fffa67b7b17641 [2020-10-11 15:04:12,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:04:12,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:04:12,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:04:12,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:04:12,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:04:12,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:04:12" (1/1) ... [2020-10-11 15:04:12,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230290f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:12, skipping insertion in model container [2020-10-11 15:04:12,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:04:12" (1/1) ... [2020-10-11 15:04:12,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:04:12,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:04:13,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:04:13,056 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:04:13,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:04:13,281 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:04:13,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13 WrapperNode [2020-10-11 15:04:13,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:04:13,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:04:13,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:04:13,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:04:13,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:04:13,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:04:13,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:04:13,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:04:13,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... [2020-10-11 15:04:13,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:04:13,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:04:13,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:04:13,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:04:13,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:04:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:04:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:04:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:04:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:04:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:04:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:04:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:04:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:04:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:04:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:04:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:04:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:04:13,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:04:13,435 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:04:13,820 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:04:13,820 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:04:13,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:04:13 BoogieIcfgContainer [2020-10-11 15:04:13,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:04:13,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:04:13,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:04:13,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:04:13,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:04:12" (1/3) ... [2020-10-11 15:04:13,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db2db8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:04:13, skipping insertion in model container [2020-10-11 15:04:13,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:13" (2/3) ... [2020-10-11 15:04:13,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db2db8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:04:13, skipping insertion in model container [2020-10-11 15:04:13,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:04:13" (3/3) ... [2020-10-11 15:04:13,830 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2020-10-11 15:04:13,842 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:04:13,842 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:04:13,850 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:04:13,851 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:04:13,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,884 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,885 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,896 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,897 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,897 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,897 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,909 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,911 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,911 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,911 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,913 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,913 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,914 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,914 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:13,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 15:04:13,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:04:13,957 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:04:13,957 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:04:13,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:04:13,958 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:04:13,958 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:04:13,958 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:04:13,958 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:04:13,972 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:04:13,975 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-11 15:04:13,978 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-11 15:04:13,980 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 15:04:14,024 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-11 15:04:14,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:04:14,030 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 54 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. [2020-10-11 15:04:14,033 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-11 15:04:15,628 INFO L132 LiptonReduction]: Checked pairs total: 2407 [2020-10-11 15:04:15,629 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-11 15:04:15,636 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-11 15:04:15,671 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-11 15:04:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-11 15:04:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:04:15,682 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:15,682 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:15,683 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:15,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:15,688 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-10-11 15:04:15,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:15,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725964287] [2020-10-11 15:04:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:15,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725964287] [2020-10-11 15:04:15,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:15,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:04:15,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752681356] [2020-10-11 15:04:15,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:15,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:15,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:15,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:15,952 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-11 15:04:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:16,013 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-11 15:04:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:16,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-11 15:04:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:16,031 INFO L225 Difference]: With dead ends: 290 [2020-10-11 15:04:16,031 INFO L226 Difference]: Without dead ends: 226 [2020-10-11 15:04:16,033 INFO L673 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 [2020-10-11 15:04:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-11 15:04:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-11 15:04:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-11 15:04:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-11 15:04:16,103 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-11 15:04:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:16,104 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-11 15:04:16,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-11 15:04:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:04:16,106 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:16,106 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:16,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:04:16,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash 572259518, now seen corresponding path program 1 times [2020-10-11 15:04:16,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:16,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55097580] [2020-10-11 15:04:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:16,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55097580] [2020-10-11 15:04:16,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:16,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:04:16,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926759726] [2020-10-11 15:04:16,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:16,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:16,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:16,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:16,201 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-11 15:04:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:16,213 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-10-11 15:04:16,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:16,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-11 15:04:16,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:16,217 INFO L225 Difference]: With dead ends: 220 [2020-10-11 15:04:16,217 INFO L226 Difference]: Without dead ends: 220 [2020-10-11 15:04:16,218 INFO L673 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 [2020-10-11 15:04:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-11 15:04:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-10-11 15:04:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-11 15:04:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-10-11 15:04:16,243 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-10-11 15:04:16,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:16,243 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-10-11 15:04:16,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-10-11 15:04:16,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 15:04:16,245 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:16,245 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:16,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:04:16,246 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1053246614, now seen corresponding path program 1 times [2020-10-11 15:04:16,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:16,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995064791] [2020-10-11 15:04:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:16,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995064791] [2020-10-11 15:04:16,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:16,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:16,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268860770] [2020-10-11 15:04:16,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:16,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:16,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:16,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:16,314 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 3 states. [2020-10-11 15:04:16,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:16,325 INFO L93 Difference]: Finished difference Result 296 states and 766 transitions. [2020-10-11 15:04:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:16,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-11 15:04:16,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:16,329 INFO L225 Difference]: With dead ends: 296 [2020-10-11 15:04:16,329 INFO L226 Difference]: Without dead ends: 236 [2020-10-11 15:04:16,330 INFO L673 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 [2020-10-11 15:04:16,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-11 15:04:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-10-11 15:04:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-11 15:04:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 548 transitions. [2020-10-11 15:04:16,347 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 548 transitions. Word has length 10 [2020-10-11 15:04:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:16,348 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 548 transitions. [2020-10-11 15:04:16,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 548 transitions. [2020-10-11 15:04:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 15:04:16,350 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:16,350 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:16,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:04:16,350 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:16,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1826039448, now seen corresponding path program 1 times [2020-10-11 15:04:16,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:16,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908409739] [2020-10-11 15:04:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:16,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908409739] [2020-10-11 15:04:16,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:16,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:04:16,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847491601] [2020-10-11 15:04:16,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:16,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:16,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:16,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:16,423 INFO L87 Difference]: Start difference. First operand 212 states and 548 transitions. Second operand 3 states. [2020-10-11 15:04:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:16,439 INFO L93 Difference]: Finished difference Result 203 states and 518 transitions. [2020-10-11 15:04:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:16,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-11 15:04:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:16,442 INFO L225 Difference]: With dead ends: 203 [2020-10-11 15:04:16,442 INFO L226 Difference]: Without dead ends: 203 [2020-10-11 15:04:16,442 INFO L673 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 [2020-10-11 15:04:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-11 15:04:16,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-10-11 15:04:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-11 15:04:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 518 transitions. [2020-10-11 15:04:16,472 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 518 transitions. Word has length 10 [2020-10-11 15:04:16,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:16,474 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 518 transitions. [2020-10-11 15:04:16,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 518 transitions. [2020-10-11 15:04:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:04:16,476 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:16,476 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:16,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:04:16,477 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:16,480 INFO L82 PathProgramCache]: Analyzing trace with hash -772648785, now seen corresponding path program 1 times [2020-10-11 15:04:16,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:16,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041135983] [2020-10-11 15:04:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:16,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041135983] [2020-10-11 15:04:16,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:16,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:16,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948506640] [2020-10-11 15:04:16,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:16,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:16,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:16,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:16,544 INFO L87 Difference]: Start difference. First operand 203 states and 518 transitions. Second operand 4 states. [2020-10-11 15:04:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:16,565 INFO L93 Difference]: Finished difference Result 240 states and 585 transitions. [2020-10-11 15:04:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:04:16,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-11 15:04:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:16,567 INFO L225 Difference]: With dead ends: 240 [2020-10-11 15:04:16,567 INFO L226 Difference]: Without dead ends: 144 [2020-10-11 15:04:16,567 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-11 15:04:16,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-11 15:04:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 15:04:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2020-10-11 15:04:16,574 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 11 [2020-10-11 15:04:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:16,575 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2020-10-11 15:04:16,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2020-10-11 15:04:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 15:04:16,576 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:16,576 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:16,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:04:16,576 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:16,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:16,577 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-10-11 15:04:16,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:16,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90810036] [2020-10-11 15:04:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:16,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90810036] [2020-10-11 15:04:16,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:16,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:16,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981517007] [2020-10-11 15:04:16,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:16,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:16,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:16,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:16,645 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand 4 states. [2020-10-11 15:04:16,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:16,682 INFO L93 Difference]: Finished difference Result 164 states and 345 transitions. [2020-10-11 15:04:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:04:16,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 15:04:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:16,684 INFO L225 Difference]: With dead ends: 164 [2020-10-11 15:04:16,684 INFO L226 Difference]: Without dead ends: 124 [2020-10-11 15:04:16,685 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-11 15:04:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-11 15:04:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-11 15:04:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-10-11 15:04:16,690 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 12 [2020-10-11 15:04:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:16,690 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-10-11 15:04:16,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-10-11 15:04:16,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:04:16,692 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:16,692 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:16,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:04:16,692 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:16,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:16,693 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 1 times [2020-10-11 15:04:16,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:16,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660511843] [2020-10-11 15:04:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:16,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660511843] [2020-10-11 15:04:16,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:16,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:16,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948257746] [2020-10-11 15:04:16,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:04:16,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:16,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:04:16,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:16,750 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand 5 states. [2020-10-11 15:04:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:16,798 INFO L93 Difference]: Finished difference Result 122 states and 237 transitions. [2020-10-11 15:04:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:04:16,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:04:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:16,801 INFO L225 Difference]: With dead ends: 122 [2020-10-11 15:04:16,801 INFO L226 Difference]: Without dead ends: 97 [2020-10-11 15:04:16,801 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:04:16,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-11 15:04:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-11 15:04:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-11 15:04:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-10-11 15:04:16,806 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 13 [2020-10-11 15:04:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:16,806 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-10-11 15:04:16,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:04:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-10-11 15:04:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:04:16,808 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:16,808 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:16,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:04:16,808 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:16,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1341104517, now seen corresponding path program 1 times [2020-10-11 15:04:16,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:16,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725447857] [2020-10-11 15:04:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:16,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725447857] [2020-10-11 15:04:16,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:16,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:16,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973381291] [2020-10-11 15:04:16,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:16,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:16,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:16,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:16,879 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 3 states. [2020-10-11 15:04:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:16,891 INFO L93 Difference]: Finished difference Result 101 states and 184 transitions. [2020-10-11 15:04:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:16,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-11 15:04:16,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:16,894 INFO L225 Difference]: With dead ends: 101 [2020-10-11 15:04:16,894 INFO L226 Difference]: Without dead ends: 73 [2020-10-11 15:04:16,895 INFO L673 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 [2020-10-11 15:04:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-11 15:04:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-11 15:04:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-11 15:04:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-10-11 15:04:16,898 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 14 [2020-10-11 15:04:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:16,898 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-10-11 15:04:16,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-10-11 15:04:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:04:16,899 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:16,899 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:16,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:04:16,902 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:16,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:16,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 1 times [2020-10-11 15:04:16,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:16,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531647194] [2020-10-11 15:04:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:17,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531647194] [2020-10-11 15:04:17,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:17,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:04:17,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430066564] [2020-10-11 15:04:17,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:04:17,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:17,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:04:17,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:04:17,022 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand 6 states. [2020-10-11 15:04:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:17,055 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-10-11 15:04:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:04:17,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-11 15:04:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:17,056 INFO L225 Difference]: With dead ends: 67 [2020-10-11 15:04:17,056 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:04:17,056 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:04:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:04:17,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:04:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:04:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:04:17,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-11 15:04:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:17,058 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:04:17,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:04:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:04:17,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:04:17,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 15:04:17,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:04:17 BasicIcfg [2020-10-11 15:04:17,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:04:17,065 INFO L168 Benchmark]: Toolchain (without parser) took 4451.11 ms. Allocated memory was 251.7 MB in the beginning and 371.7 MB in the end (delta: 120.1 MB). Free memory was 204.5 MB in the beginning and 243.9 MB in the end (delta: -39.4 MB). Peak memory consumption was 80.7 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:17,065 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 251.7 MB. Free memory is still 225.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:04:17,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.61 ms. Allocated memory was 251.7 MB in the beginning and 316.7 MB in the end (delta: 65.0 MB). Free memory was 204.5 MB in the beginning and 271.7 MB in the end (delta: -67.2 MB). Peak memory consumption was 30.8 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:17,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.41 ms. Allocated memory is still 316.7 MB. Free memory was 271.7 MB in the beginning and 269.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:17,073 INFO L168 Benchmark]: Boogie Preprocessor took 24.95 ms. Allocated memory is still 316.7 MB. Free memory was 269.2 MB in the beginning and 266.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:17,075 INFO L168 Benchmark]: RCFGBuilder took 463.92 ms. Allocated memory is still 316.7 MB. Free memory was 266.7 MB in the beginning and 244.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:17,075 INFO L168 Benchmark]: TraceAbstraction took 3238.75 ms. Allocated memory was 316.7 MB in the beginning and 371.7 MB in the end (delta: 55.1 MB). Free memory was 244.8 MB in the beginning and 243.9 MB in the end (delta: 946.5 kB). Peak memory consumption was 56.0 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:17,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 251.7 MB. Free memory is still 225.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 668.61 ms. Allocated memory was 251.7 MB in the beginning and 316.7 MB in the end (delta: 65.0 MB). Free memory was 204.5 MB in the beginning and 271.7 MB in the end (delta: -67.2 MB). Peak memory consumption was 30.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.41 ms. Allocated memory is still 316.7 MB. Free memory was 271.7 MB in the beginning and 269.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.95 ms. Allocated memory is still 316.7 MB. Free memory was 269.2 MB in the beginning and 266.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 463.92 ms. Allocated memory is still 316.7 MB. Free memory was 266.7 MB in the beginning and 244.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3238.75 ms. Allocated memory was 316.7 MB in the beginning and 371.7 MB in the end (delta: 55.1 MB). Free memory was 244.8 MB in the beginning and 243.9 MB in the end (delta: 946.5 kB). Peak memory consumption was 56.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 853 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 2407 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: 3.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 167 SDtfs, 120 SDslu, 173 SDs, 0 SdLazy, 83 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 2893 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...