/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/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:55:30,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:55:30,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:55:30,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:55:30,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:55:30,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:55:30,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:55:30,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:55:30,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:55:30,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:55:30,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:55:30,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:55:30,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:55:30,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:55:30,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:55:30,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:55:30,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:55:30,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:55:30,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:55:30,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:55:30,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:55:30,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:55:30,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:55:30,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:55:30,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 00:55:30,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 00:55:30,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 00:55:30,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 00:55:30,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 00:55:30,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 00:55:30,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:55:30,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:55:30,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:55:30,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:55:30,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:55:30,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:55:30,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:55:30,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:55:30,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:55:30,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:55:30,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:55:30,972 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 [2020-09-18 00:55:31,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:55:31,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:55:31,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:55:31,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:55:31,018 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:55:31,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:55:31,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:55:31,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:55:31,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:55:31,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:55:31,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:55:31,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:55:31,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:55:31,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:55:31,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:55:31,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:55:31,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:55:31,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:55:31,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:55:31,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:55:31,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:55:31,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:55:31,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:55:31,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:55:31,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:55:31,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:55:31,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:55:31,023 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:55:31,023 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:55:31,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:55:31,024 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:55:31,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:55:31,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:55:31,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:55:31,493 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:55:31,494 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:55:31,495 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-09-18 00:55:31,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7865375ef/9a7283b74cbc4fc2b7f12289308f18f1/FLAGaea62143f [2020-09-18 00:55:32,254 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:55:32,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-09-18 00:55:32,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7865375ef/9a7283b74cbc4fc2b7f12289308f18f1/FLAGaea62143f [2020-09-18 00:55:32,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7865375ef/9a7283b74cbc4fc2b7f12289308f18f1 [2020-09-18 00:55:32,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:55:32,464 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:55:32,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:55:32,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:55:32,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:55:32,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:55:32" (1/1) ... [2020-09-18 00:55:32,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689fd9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:32, skipping insertion in model container [2020-09-18 00:55:32,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:55:32" (1/1) ... [2020-09-18 00:55:32,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:55:32,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:55:33,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:55:33,217 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:55:33,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:55:33,371 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:55:33,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33 WrapperNode [2020-09-18 00:55:33,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:55:33,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:55:33,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:55:33,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:55:33,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:55:33,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:55:33,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:55:33,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:55:33,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (1/1) ... [2020-09-18 00:55:33,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:55:33,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:55:33,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:55:33,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:55:33,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (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 [2020-09-18 00:55:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:55:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:55:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:55:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:55:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:55:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:55:33,575 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:55:33,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:55:33,575 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:55:33,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:55:33,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:55:33,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:55:33,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:55:33,579 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 00:55:34,022 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:55:34,023 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:55:34,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:55:34 BoogieIcfgContainer [2020-09-18 00:55:34,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:55:34,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:55:34,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:55:34,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:55:34,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:55:32" (1/3) ... [2020-09-18 00:55:34,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172cf854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:55:34, skipping insertion in model container [2020-09-18 00:55:34,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:55:33" (2/3) ... [2020-09-18 00:55:34,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172cf854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:55:34, skipping insertion in model container [2020-09-18 00:55:34,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:55:34" (3/3) ... [2020-09-18 00:55:34,042 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-09-18 00:55:34,055 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:55:34,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:55:34,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:55:34,067 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:55:34,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,100 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,100 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,102 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,102 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,102 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,118 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,118 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,119 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,119 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,121 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,122 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,122 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,122 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:55:34,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:55:34,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:55:34,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:55:34,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:55:34,176 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:55:34,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:55:34,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:55:34,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:55:34,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:55:34,196 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 00:55:34,198 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 00:55:34,248 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 00:55:34,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:55:34,255 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:55:34,258 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 00:55:34,278 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 00:55:34,278 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:55:34,279 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:55:34,281 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 00:55:34,284 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:55:35,803 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 00:55:36,007 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-18 00:55:36,060 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-18 00:55:36,060 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-18 00:55:36,065 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-18 00:55:36,094 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 00:55:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 00:55:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:55:36,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:36,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:36,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:36,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:36,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-18 00:55:36,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:36,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094243217] [2020-09-18 00:55:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:36,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094243217] [2020-09-18 00:55:36,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:36,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:55:36,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [785454195] [2020-09-18 00:55:36,417 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:36,420 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:36,438 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:55:36,438 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:36,440 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:36,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:55:36,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:36,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:55:36,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:55:36,462 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 00:55:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:36,509 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-18 00:55:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:55:36,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:55:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:36,532 INFO L225 Difference]: With dead ends: 282 [2020-09-18 00:55:36,533 INFO L226 Difference]: Without dead ends: 218 [2020-09-18 00:55:36,535 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 [2020-09-18 00:55:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-18 00:55:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-18 00:55:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-18 00:55:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-18 00:55:36,612 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-18 00:55:36,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:36,613 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-18 00:55:36,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:55:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-18 00:55:36,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:55:36,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:36,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:36,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:55:36,616 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:36,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-18 00:55:36,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:36,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811914929] [2020-09-18 00:55:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:36,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811914929] [2020-09-18 00:55:36,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:36,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:55:36,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [873039894] [2020-09-18 00:55:36,713 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:36,714 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:36,717 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 00:55:36,717 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:36,774 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:36,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:55:36,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:36,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:55:36,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:55:36,777 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-18 00:55:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:36,806 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-18 00:55:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:55:36,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-18 00:55:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:36,809 INFO L225 Difference]: With dead ends: 242 [2020-09-18 00:55:36,809 INFO L226 Difference]: Without dead ends: 116 [2020-09-18 00:55:36,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:55:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-18 00:55:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-18 00:55:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-18 00:55:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-18 00:55:36,823 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-18 00:55:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:36,823 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-18 00:55:36,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:55:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-18 00:55:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:55:36,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:36,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:36,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:55:36,825 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:36,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-18 00:55:36,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:36,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56557006] [2020-09-18 00:55:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:36,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56557006] [2020-09-18 00:55:36,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:36,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:55:36,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [585147691] [2020-09-18 00:55:36,968 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:36,970 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:36,972 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-18 00:55:36,972 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:36,978 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:36,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:55:36,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:36,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:55:36,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:55:36,979 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-18 00:55:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:36,991 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-18 00:55:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:55:36,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 00:55:36,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:36,993 INFO L225 Difference]: With dead ends: 110 [2020-09-18 00:55:36,993 INFO L226 Difference]: Without dead ends: 110 [2020-09-18 00:55:36,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:55:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-18 00:55:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-18 00:55:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-18 00:55:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-18 00:55:37,003 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-18 00:55:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:37,004 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-18 00:55:37,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:55:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-18 00:55:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:55:37,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:37,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:37,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:55:37,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-18 00:55:37,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:37,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918747566] [2020-09-18 00:55:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:37,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918747566] [2020-09-18 00:55:37,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:37,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:55:37,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1280067163] [2020-09-18 00:55:37,071 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:37,072 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:37,075 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-18 00:55:37,075 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:37,086 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:37,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:55:37,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:37,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:55:37,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:55:37,087 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-18 00:55:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:37,100 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-18 00:55:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:55:37,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-18 00:55:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:37,102 INFO L225 Difference]: With dead ends: 104 [2020-09-18 00:55:37,102 INFO L226 Difference]: Without dead ends: 104 [2020-09-18 00:55:37,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:55:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-18 00:55:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-18 00:55:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-18 00:55:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-18 00:55:37,111 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-18 00:55:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:37,111 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-18 00:55:37,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:55:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-18 00:55:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:55:37,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:37,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:37,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:55:37,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:37,114 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-18 00:55:37,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:37,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272011056] [2020-09-18 00:55:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:37,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272011056] [2020-09-18 00:55:37,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:37,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:55:37,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1698358494] [2020-09-18 00:55:37,185 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:37,186 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:37,190 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-18 00:55:37,190 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:37,221 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:37,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:55:37,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:37,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:55:37,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:55:37,222 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-18 00:55:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:37,249 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-18 00:55:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:55:37,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 00:55:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:37,251 INFO L225 Difference]: With dead ends: 158 [2020-09-18 00:55:37,251 INFO L226 Difference]: Without dead ends: 104 [2020-09-18 00:55:37,251 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 [2020-09-18 00:55:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-18 00:55:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-18 00:55:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-18 00:55:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-18 00:55:37,258 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-18 00:55:37,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:37,259 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-18 00:55:37,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:55:37,259 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-18 00:55:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:55:37,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:37,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:37,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:55:37,261 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:37,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:37,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-18 00:55:37,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:37,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045062022] [2020-09-18 00:55:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:37,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045062022] [2020-09-18 00:55:37,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:37,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:55:37,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1345727674] [2020-09-18 00:55:37,392 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:37,393 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:37,397 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-18 00:55:37,399 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:37,444 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:55:37,465 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:37,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:55:37,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:37,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:55:37,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:55:37,466 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-18 00:55:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:37,501 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-18 00:55:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:55:37,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 00:55:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:37,503 INFO L225 Difference]: With dead ends: 127 [2020-09-18 00:55:37,503 INFO L226 Difference]: Without dead ends: 87 [2020-09-18 00:55:37,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:55:37,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-18 00:55:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-18 00:55:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-18 00:55:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-18 00:55:37,509 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-18 00:55:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:37,509 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-18 00:55:37,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:55:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-18 00:55:37,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 00:55:37,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:37,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:37,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 00:55:37,511 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:37,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:37,512 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-18 00:55:37,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:37,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221397887] [2020-09-18 00:55:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:37,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221397887] [2020-09-18 00:55:37,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:37,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:55:37,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1520112930] [2020-09-18 00:55:37,587 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:37,588 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:37,592 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-18 00:55:37,593 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:37,646 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 00:55:37,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 00:55:37,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:37,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 00:55:37,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 00:55:37,648 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-18 00:55:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:37,702 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-18 00:55:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 00:55:37,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-18 00:55:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:37,703 INFO L225 Difference]: With dead ends: 90 [2020-09-18 00:55:37,703 INFO L226 Difference]: Without dead ends: 65 [2020-09-18 00:55:37,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:55:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-18 00:55:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-18 00:55:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-18 00:55:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-18 00:55:37,708 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-18 00:55:37,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:37,708 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-18 00:55:37,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 00:55:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-18 00:55:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-18 00:55:37,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:37,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:37,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 00:55:37,710 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-18 00:55:37,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:37,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387808637] [2020-09-18 00:55:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:37,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387808637] [2020-09-18 00:55:37,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:37,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 00:55:37,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1252392044] [2020-09-18 00:55:37,788 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:37,790 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:37,794 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-18 00:55:37,795 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:37,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:55:37,860 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 00:55:37,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 00:55:37,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:37,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 00:55:37,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:55:37,861 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-18 00:55:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:37,913 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-18 00:55:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:55:37,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-18 00:55:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:37,915 INFO L225 Difference]: With dead ends: 62 [2020-09-18 00:55:37,915 INFO L226 Difference]: Without dead ends: 54 [2020-09-18 00:55:37,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 00:55:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-18 00:55:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-18 00:55:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-18 00:55:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-18 00:55:37,918 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-18 00:55:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:37,919 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-18 00:55:37,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 00:55:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-18 00:55:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:55:37,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:37,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:37,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 00:55:37,920 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:37,921 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-18 00:55:37,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:37,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678805686] [2020-09-18 00:55:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:37,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678805686] [2020-09-18 00:55:37,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:37,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:55:37,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1750942824] [2020-09-18 00:55:37,975 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:37,976 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:37,981 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-18 00:55:37,982 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:38,012 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:38,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:55:38,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:38,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:55:38,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:55:38,014 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-18 00:55:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:38,031 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-18 00:55:38,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:55:38,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:55:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:38,032 INFO L225 Difference]: With dead ends: 63 [2020-09-18 00:55:38,033 INFO L226 Difference]: Without dead ends: 35 [2020-09-18 00:55:38,033 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 [2020-09-18 00:55:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-18 00:55:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-18 00:55:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-18 00:55:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-18 00:55:38,035 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-18 00:55:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:38,035 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-18 00:55:38,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:55:38,036 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-18 00:55:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:55:38,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:38,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:38,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 00:55:38,037 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:38,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:38,037 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-18 00:55:38,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:38,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756075172] [2020-09-18 00:55:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:38,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756075172] [2020-09-18 00:55:38,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:38,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:55:38,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2017123454] [2020-09-18 00:55:38,086 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:38,088 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:38,091 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-18 00:55:38,091 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:38,105 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:38,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:55:38,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:38,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:55:38,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:55:38,107 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-18 00:55:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:38,122 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-18 00:55:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:55:38,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:55:38,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:38,123 INFO L225 Difference]: With dead ends: 48 [2020-09-18 00:55:38,124 INFO L226 Difference]: Without dead ends: 30 [2020-09-18 00:55:38,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:55:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-18 00:55:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-18 00:55:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-18 00:55:38,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-18 00:55:38,126 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-18 00:55:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:38,126 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-18 00:55:38,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:55:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-18 00:55:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:55:38,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:55:38,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:55:38,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-18 00:55:38,128 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:55:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:55:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-18 00:55:38,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:55:38,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880656139] [2020-09-18 00:55:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:55:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:55:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:55:38,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880656139] [2020-09-18 00:55:38,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:55:38,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:55:38,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1357662062] [2020-09-18 00:55:38,186 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:55:38,188 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:55:38,191 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-18 00:55:38,191 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:55:38,205 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:55:38,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:55:38,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:55:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:55:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:55:38,206 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-18 00:55:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:55:38,221 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-18 00:55:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:55:38,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:55:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:55:38,222 INFO L225 Difference]: With dead ends: 29 [2020-09-18 00:55:38,222 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:55:38,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:55:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:55:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:55:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:55:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:55:38,224 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 00:55:38,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:55:38,224 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:55:38,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:55:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:55:38,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:55:38,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-18 00:55:38,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:55:38 BasicIcfg [2020-09-18 00:55:38,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:55:38,232 INFO L168 Benchmark]: Toolchain (without parser) took 5770.77 ms. Allocated memory was 139.5 MB in the beginning and 250.1 MB in the end (delta: 110.6 MB). Free memory was 100.0 MB in the beginning and 90.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 119.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:55:38,233 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 00:55:38,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 909.69 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 99.3 MB in the beginning and 162.3 MB in the end (delta: -63.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:55:38,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.61 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 160.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 00:55:38,236 INFO L168 Benchmark]: Boogie Preprocessor took 39.10 ms. Allocated memory is still 204.5 MB. Free memory was 160.3 MB in the beginning and 159.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:55:38,236 INFO L168 Benchmark]: RCFGBuilder took 548.67 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 136.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-18 00:55:38,237 INFO L168 Benchmark]: TraceAbstraction took 4197.19 ms. Allocated memory was 204.5 MB in the beginning and 250.1 MB in the end (delta: 45.6 MB). Free memory was 136.2 MB in the beginning and 90.9 MB in the end (delta: 45.3 MB). Peak memory consumption was 90.9 MB. Max. memory is 7.1 GB. [2020-09-18 00:55:38,257 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 909.69 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 99.3 MB in the beginning and 162.3 MB in the end (delta: -63.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.61 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 160.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.10 ms. Allocated memory is still 204.5 MB. Free memory was 160.3 MB in the beginning and 159.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 548.67 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 136.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4197.19 ms. Allocated memory was 204.5 MB in the beginning and 250.1 MB in the end (delta: 45.6 MB). Free memory was 136.2 MB in the beginning and 90.9 MB in the end (delta: 45.3 MB). Peak memory consumption was 90.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 214 SDtfs, 132 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...