/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:11:51,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:11:51,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:11:51,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:11:51,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:11:51,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:11:51,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:11:51,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:11:51,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:11:51,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:11:51,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:11:51,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:11:51,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:11:51,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:11:51,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:11:51,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:11:51,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:11:51,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:11:51,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:11:51,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:11:51,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:11:51,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:11:51,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:11:51,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:11:51,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:11:51,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:11:51,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:11:51,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:11:51,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:11:51,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:11:51,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:11:51,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:11:51,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:11:51,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:11:51,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:11:51,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:11:51,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:11:51,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:11:51,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:11:51,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:11:51,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:11:51,253 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:11:51,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:11:51,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:11:51,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:11:51,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:11:51,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:11:51,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:11:51,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:11:51,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:11:51,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:11:51,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:11:51,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:11:51,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:11:51,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:11:51,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:11:51,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:11:51,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:11:51,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:11:51,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:11:51,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:11:51,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:11:51,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:11:51,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:11:51,258 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:11:51,258 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:11:51,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:11:51,258 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:11:51,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:11:51,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:11:51,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:11:51,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:11:51,600 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:11:51,602 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-10-06 01:11:51,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefb69252/5cbb783d05cc4a8a9c97877d769f370f/FLAGc57400140 [2020-10-06 01:11:52,189 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:11:52,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-10-06 01:11:52,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefb69252/5cbb783d05cc4a8a9c97877d769f370f/FLAGc57400140 [2020-10-06 01:11:52,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefb69252/5cbb783d05cc4a8a9c97877d769f370f [2020-10-06 01:11:52,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:11:52,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:11:52,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:11:52,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:11:52,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:11:52,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:11:52" (1/1) ... [2020-10-06 01:11:52,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fc379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:52, skipping insertion in model container [2020-10-06 01:11:52,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:11:52" (1/1) ... [2020-10-06 01:11:52,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:11:52,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:11:53,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:11:53,126 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:11:53,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:11:53,288 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:11:53,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53 WrapperNode [2020-10-06 01:11:53,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:11:53,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:11:53,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:11:53,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:11:53,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:11:53,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:11:53,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:11:53,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:11:53,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (1/1) ... [2020-10-06 01:11:53,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:11:53,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:11:53,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:11:53,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:11:53,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (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 [2020-10-06 01:11:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:11:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:11:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:11:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:11:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:11:53,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:11:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:11:53,461 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:11:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:11:53,461 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:11:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:11:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:11:53,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:11:53,464 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:11:53,853 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:11:53,854 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:11:53,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:11:53 BoogieIcfgContainer [2020-10-06 01:11:53,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:11:53,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:11:53,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:11:53,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:11:53,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:11:52" (1/3) ... [2020-10-06 01:11:53,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464cdb7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:11:53, skipping insertion in model container [2020-10-06 01:11:53,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:11:53" (2/3) ... [2020-10-06 01:11:53,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464cdb7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:11:53, skipping insertion in model container [2020-10-06 01:11:53,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:11:53" (3/3) ... [2020-10-06 01:11:53,865 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-10-06 01:11:53,876 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:11:53,876 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:11:53,883 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:11:53,884 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:11:53,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,912 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,913 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,915 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,916 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,916 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,917 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,917 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,918 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,918 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,923 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,923 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,932 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:11:53,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:11:53,977 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:11:53,978 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:11:53,978 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:11:53,978 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:11:53,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:11:53,978 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:11:53,978 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:11:53,979 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:11:53,995 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-06 01:11:53,997 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-06 01:11:54,042 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-06 01:11:54,042 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:11:54,047 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 46 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. [2020-10-06 01:11:54,050 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-06 01:11:54,071 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-06 01:11:54,071 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:11:54,072 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 46 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. [2020-10-06 01:11:54,074 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:11:54,075 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:11:55,351 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-10-06 01:11:55,352 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-10-06 01:11:55,356 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-06 01:11:55,382 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:11:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:11:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:11:55,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:11:55,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:11:55,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:11:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:11:55,400 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-10-06 01:11:55,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:11:55,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543028980] [2020-10-06 01:11:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:11:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:11:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:11:55,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543028980] [2020-10-06 01:11:55,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:11:55,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:11:55,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1873427281] [2020-10-06 01:11:55,633 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:11:55,636 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:11:55,652 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:11:55,653 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:11:55,658 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:11:55,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:11:55,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:11:55,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:11:55,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:11:55,678 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:11:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:11:55,711 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-06 01:11:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:11:55,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:11:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:11:55,730 INFO L225 Difference]: With dead ends: 290 [2020-10-06 01:11:55,731 INFO L226 Difference]: Without dead ends: 226 [2020-10-06 01:11:55,732 INFO L675 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 [2020-10-06 01:11:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-06 01:11:55,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-06 01:11:55,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-06 01:11:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-06 01:11:55,805 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-06 01:11:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:11:55,806 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-06 01:11:55,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:11:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-06 01:11:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:11:55,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:11:55,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:11:55,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:11:55,809 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:11:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:11:55,809 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-10-06 01:11:55,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:11:55,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270204010] [2020-10-06 01:11:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:11:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:11:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:11:55,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270204010] [2020-10-06 01:11:55,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:11:55,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:11:55,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [251044259] [2020-10-06 01:11:55,929 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:11:55,930 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:11:55,936 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-06 01:11:55,937 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:11:55,945 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:11:55,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:11:55,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:11:55,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:11:55,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:11:55,951 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-06 01:11:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:11:55,974 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-10-06 01:11:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:11:55,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:11:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:11:55,978 INFO L225 Difference]: With dead ends: 220 [2020-10-06 01:11:55,979 INFO L226 Difference]: Without dead ends: 220 [2020-10-06 01:11:55,983 INFO L675 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 [2020-10-06 01:11:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-06 01:11:56,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-10-06 01:11:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-06 01:11:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-10-06 01:11:56,015 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-10-06 01:11:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:11:56,016 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-10-06 01:11:56,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:11:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-10-06 01:11:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:11:56,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:11:56,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:11:56,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:11:56,018 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:11:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:11:56,018 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-10-06 01:11:56,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:11:56,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941022665] [2020-10-06 01:11:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:11:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:11:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:11:56,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941022665] [2020-10-06 01:11:56,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:11:56,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:11:56,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [265844234] [2020-10-06 01:11:56,106 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:11:56,107 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:11:56,109 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-06 01:11:56,109 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:11:56,172 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:11:56,189 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:11:56,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:11:56,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:11:56,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:11:56,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:11:56,191 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-10-06 01:11:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:11:56,233 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-10-06 01:11:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:11:56,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-06 01:11:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:11:56,236 INFO L225 Difference]: With dead ends: 240 [2020-10-06 01:11:56,236 INFO L226 Difference]: Without dead ends: 176 [2020-10-06 01:11:56,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:11:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-06 01:11:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-10-06 01:11:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-06 01:11:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-10-06 01:11:56,250 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-10-06 01:11:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:11:56,250 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-10-06 01:11:56,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:11:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-10-06 01:11:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:11:56,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:11:56,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:11:56,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:11:56,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:11:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:11:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-10-06 01:11:56,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:11:56,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849835895] [2020-10-06 01:11:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:11:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:11:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:11:56,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849835895] [2020-10-06 01:11:56,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:11:56,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:11:56,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1599097027] [2020-10-06 01:11:56,294 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:11:56,296 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:11:56,297 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-06 01:11:56,297 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:11:56,297 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:11:56,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:11:56,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:11:56,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:11:56,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:11:56,299 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-10-06 01:11:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:11:56,308 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-10-06 01:11:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:11:56,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 01:11:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:11:56,310 INFO L225 Difference]: With dead ends: 225 [2020-10-06 01:11:56,310 INFO L226 Difference]: Without dead ends: 183 [2020-10-06 01:11:56,310 INFO L675 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 [2020-10-06 01:11:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-06 01:11:56,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-10-06 01:11:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-06 01:11:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-10-06 01:11:56,321 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-10-06 01:11:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:11:56,321 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-10-06 01:11:56,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:11:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-10-06 01:11:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:11:56,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:11:56,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:11:56,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:11:56,324 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:11:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:11:56,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-10-06 01:11:56,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:11:56,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468776124] [2020-10-06 01:11:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:11:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:11:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:11:56,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468776124] [2020-10-06 01:11:56,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:11:56,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:11:56,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1141364619] [2020-10-06 01:11:56,402 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:11:56,403 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:11:56,406 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-10-06 01:11:56,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:11:56,490 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3257#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:11:56,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:11:56,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:11:56,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:11:56,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:11:56,491 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 6 states. [2020-10-06 01:11:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:11:56,548 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-10-06 01:11:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:11:56,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-06 01:11:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:11:56,550 INFO L225 Difference]: With dead ends: 162 [2020-10-06 01:11:56,550 INFO L226 Difference]: Without dead ends: 125 [2020-10-06 01:11:56,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:11:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-06 01:11:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-06 01:11:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-06 01:11:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-10-06 01:11:56,557 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-10-06 01:11:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:11:56,557 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-10-06 01:11:56,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:11:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-10-06 01:11:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:11:56,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:11:56,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:11:56,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:11:56,560 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:11:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:11:56,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-10-06 01:11:56,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:11:56,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291623702] [2020-10-06 01:11:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:11:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:11:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:11:56,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291623702] [2020-10-06 01:11:56,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:11:56,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:11:56,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [310225534] [2020-10-06 01:11:56,597 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:11:56,599 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:11:56,603 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-10-06 01:11:56,604 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:11:56,665 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:11:56,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:11:56,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:11:56,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:11:56,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:11:56,666 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-10-06 01:11:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:11:56,684 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-10-06 01:11:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:11:56,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-06 01:11:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:11:56,686 INFO L225 Difference]: With dead ends: 157 [2020-10-06 01:11:56,686 INFO L226 Difference]: Without dead ends: 120 [2020-10-06 01:11:56,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:11:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-06 01:11:56,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-06 01:11:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-06 01:11:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-10-06 01:11:56,695 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-10-06 01:11:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:11:56,696 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-10-06 01:11:56,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:11:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-10-06 01:11:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:11:56,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:11:56,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:11:56,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:11:56,702 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:11:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:11:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-10-06 01:11:56,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:11:56,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090555682] [2020-10-06 01:11:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:11:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:11:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:11:56,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090555682] [2020-10-06 01:11:56,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:11:56,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:11:56,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [446190208] [2020-10-06 01:11:56,835 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:11:56,836 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:11:56,839 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-10-06 01:11:56,840 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:11:56,853 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4074#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:11:56,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:11:56,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:11:56,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:11:56,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:11:56,854 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 7 states. [2020-10-06 01:11:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:11:56,914 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-10-06 01:11:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:11:56,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-06 01:11:56,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:11:56,915 INFO L225 Difference]: With dead ends: 112 [2020-10-06 01:11:56,916 INFO L226 Difference]: Without dead ends: 36 [2020-10-06 01:11:56,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-06 01:11:56,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-06 01:11:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-06 01:11:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-06 01:11:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-06 01:11:56,918 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-10-06 01:11:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:11:56,918 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-06 01:11:56,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:11:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-06 01:11:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:11:56,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:11:56,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:11:56,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:11:56,920 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:11:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:11:56,920 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-10-06 01:11:56,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:11:56,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372355518] [2020-10-06 01:11:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:11:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:11:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:11:56,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372355518] [2020-10-06 01:11:56,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:11:56,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:11:56,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [785833760] [2020-10-06 01:11:56,956 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:11:56,958 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:11:56,968 INFO L258 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-10-06 01:11:56,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:11:57,012 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:11:57,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:11:57,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:11:57,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:11:57,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:11:57,014 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-06 01:11:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:11:57,024 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-06 01:11:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:11:57,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:11:57,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:11:57,025 INFO L225 Difference]: With dead ends: 35 [2020-10-06 01:11:57,025 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:11:57,025 INFO L675 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 [2020-10-06 01:11:57,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:11:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:11:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:11:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:11:57,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 01:11:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:11:57,027 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:11:57,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:11:57,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:11:57,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:11:57,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 01:11:57,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:11:57 BasicIcfg [2020-10-06 01:11:57,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:11:57,034 INFO L168 Benchmark]: Toolchain (without parser) took 4517.47 ms. Allocated memory was 138.9 MB in the beginning and 250.6 MB in the end (delta: 111.7 MB). Free memory was 100.1 MB in the beginning and 165.1 MB in the end (delta: -65.0 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:11:57,035 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:11:57,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.54 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 158.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-10-06 01:11:57,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.13 ms. Allocated memory is still 201.9 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:11:57,038 INFO L168 Benchmark]: Boogie Preprocessor took 43.74 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 154.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:11:57,039 INFO L168 Benchmark]: RCFGBuilder took 470.66 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 133.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:11:57,039 INFO L168 Benchmark]: TraceAbstraction took 3174.46 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 132.3 MB in the beginning and 165.1 MB in the end (delta: -32.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:11:57,044 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 771.54 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 158.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.13 ms. Allocated memory is still 201.9 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.74 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 154.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.66 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 133.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3174.46 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 132.3 MB in the beginning and 165.1 MB in the end (delta: -32.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 TotalNumberOfCompositions - 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: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 157 SDtfs, 105 SDslu, 204 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 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, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...