/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/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:36:34,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:36:34,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:36:34,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:36:34,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:36:34,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:36:34,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:36:34,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:36:34,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:36:34,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:36:34,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:36:34,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:36:34,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:36:34,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:36:34,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:36:34,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:36:34,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:36:34,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:36:34,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:36:34,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:36:34,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:36:34,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:36:34,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:36:34,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:36:34,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 00:36:34,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 00:36:34,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 00:36:34,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 00:36:34,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 00:36:34,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 00:36:34,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:36:34,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:36:34,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:36:34,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:36:34,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:36:34,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:36:34,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:36:34,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:36:34,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:36:34,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:36:34,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:36:34,970 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 [2020-10-22 00:36:35,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:36:35,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:36:35,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:36:35,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:36:35,019 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:36:35,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:36:35,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:36:35,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:36:35,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:36:35,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:36:35,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:36:35,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:36:35,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:36:35,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:36:35,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:36:35,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:36:35,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:36:35,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:36:35,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:36:35,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:36:35,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:36:35,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:36:35,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:36:35,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:36:35,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:36:35,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:36:35,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:36:35,024 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:36:35,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:36:35,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:36:35,025 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:36:35,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:36:35,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:36:35,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:36:35,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:36:35,415 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:36:35,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-22 00:36:35,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc41ead4/4383ecd133f648608662ee1a5435720e/FLAG8921ded57 [2020-10-22 00:36:36,087 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:36:36,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-22 00:36:36,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc41ead4/4383ecd133f648608662ee1a5435720e/FLAG8921ded57 [2020-10-22 00:36:36,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc41ead4/4383ecd133f648608662ee1a5435720e [2020-10-22 00:36:36,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:36:36,447 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:36:36,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:36:36,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:36:36,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:36:36,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:36:36" (1/1) ... [2020-10-22 00:36:36,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79578f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:36, skipping insertion in model container [2020-10-22 00:36:36,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:36:36" (1/1) ... [2020-10-22 00:36:36,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:36:36,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:36:36,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:36:36,999 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:36:37,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:36:37,180 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:36:37,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37 WrapperNode [2020-10-22 00:36:37,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:36:37,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:36:37,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:36:37,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:36:37,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:36:37,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:36:37,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:36:37,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:36:37,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (1/1) ... [2020-10-22 00:36:37,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:36:37,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:36:37,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:36:37,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:36:37,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (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 [2020-10-22 00:36:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:36:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:36:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:36:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:36:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:36:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:36:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:36:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:36:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 00:36:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 00:36:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-22 00:36:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-22 00:36:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:36:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:36:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:36:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:36:37,354 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 00:36:37,815 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:36:37,815 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:36:37,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:36:37 BoogieIcfgContainer [2020-10-22 00:36:37,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:36:37,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:36:37,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:36:37,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:36:37,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:36:36" (1/3) ... [2020-10-22 00:36:37,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbe1e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:36:37, skipping insertion in model container [2020-10-22 00:36:37,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:37" (2/3) ... [2020-10-22 00:36:37,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbe1e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:36:37, skipping insertion in model container [2020-10-22 00:36:37,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:36:37" (3/3) ... [2020-10-22 00:36:37,829 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-22 00:36:37,842 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:36:37,842 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:36:37,852 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:36:37,853 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:36:37,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,891 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,891 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,892 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,892 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,892 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,893 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,893 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,893 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,898 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,898 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,904 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,904 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,904 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,905 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,909 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,909 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,909 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,911 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,911 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,912 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,912 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:37,914 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:36:37,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-22 00:36:37,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:36:37,949 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:36:37,949 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:36:37,949 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:36:37,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:36:37,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:36:37,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:36:37,949 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:36:37,964 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:36:37,965 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-10-22 00:36:37,968 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-10-22 00:36:37,970 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-10-22 00:36:38,019 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-10-22 00:36:38,019 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:36:38,026 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-10-22 00:36:38,030 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-10-22 00:36:39,943 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-22 00:36:40,179 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-10-22 00:36:40,180 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-10-22 00:36:40,186 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-10-22 00:36:40,238 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-22 00:36:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-22 00:36:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 00:36:40,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:40,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:40,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:40,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:40,260 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-10-22 00:36:40,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:40,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334432418] [2020-10-22 00:36:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:40,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334432418] [2020-10-22 00:36:40,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:40,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:40,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [326659447] [2020-10-22 00:36:40,537 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:40,541 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:40,558 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 00:36:40,559 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:40,564 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:40,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:40,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:40,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:40,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:40,584 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-22 00:36:40,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:40,641 INFO L93 Difference]: Finished difference Result 682 states and 2336 transitions. [2020-10-22 00:36:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:40,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-22 00:36:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:40,682 INFO L225 Difference]: With dead ends: 682 [2020-10-22 00:36:40,683 INFO L226 Difference]: Without dead ends: 538 [2020-10-22 00:36:40,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-22 00:36:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-10-22 00:36:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-22 00:36:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1784 transitions. [2020-10-22 00:36:40,806 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1784 transitions. Word has length 10 [2020-10-22 00:36:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:40,807 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1784 transitions. [2020-10-22 00:36:40,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1784 transitions. [2020-10-22 00:36:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 00:36:40,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:40,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:40,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:36:40,811 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:40,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:40,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1503123814, now seen corresponding path program 1 times [2020-10-22 00:36:40,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:40,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112610686] [2020-10-22 00:36:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:40,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112610686] [2020-10-22 00:36:40,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:40,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:40,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1774913692] [2020-10-22 00:36:40,931 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:40,932 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:40,936 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 00:36:40,936 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:41,006 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:41,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:41,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:41,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:41,009 INFO L87 Difference]: Start difference. First operand 538 states and 1784 transitions. Second operand 3 states. [2020-10-22 00:36:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:41,020 INFO L93 Difference]: Finished difference Result 508 states and 1665 transitions. [2020-10-22 00:36:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:41,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-22 00:36:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:41,026 INFO L225 Difference]: With dead ends: 508 [2020-10-22 00:36:41,027 INFO L226 Difference]: Without dead ends: 508 [2020-10-22 00:36:41,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-22 00:36:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-10-22 00:36:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-22 00:36:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1665 transitions. [2020-10-22 00:36:41,058 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1665 transitions. Word has length 11 [2020-10-22 00:36:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:41,058 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1665 transitions. [2020-10-22 00:36:41,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1665 transitions. [2020-10-22 00:36:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:36:41,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:41,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:41,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:36:41,062 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:41,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1088809907, now seen corresponding path program 1 times [2020-10-22 00:36:41,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:41,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557036458] [2020-10-22 00:36:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:41,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557036458] [2020-10-22 00:36:41,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:41,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:41,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1639270267] [2020-10-22 00:36:41,140 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:41,142 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:41,144 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 00:36:41,144 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:41,219 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:41,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:41,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:41,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:41,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:41,221 INFO L87 Difference]: Start difference. First operand 508 states and 1665 transitions. Second operand 4 states. [2020-10-22 00:36:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:41,252 INFO L93 Difference]: Finished difference Result 748 states and 2407 transitions. [2020-10-22 00:36:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:36:41,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 00:36:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:41,257 INFO L225 Difference]: With dead ends: 748 [2020-10-22 00:36:41,258 INFO L226 Difference]: Without dead ends: 460 [2020-10-22 00:36:41,258 INFO L677 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 [2020-10-22 00:36:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-22 00:36:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-10-22 00:36:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-22 00:36:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1467 transitions. [2020-10-22 00:36:41,278 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1467 transitions. Word has length 12 [2020-10-22 00:36:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:41,278 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 1467 transitions. [2020-10-22 00:36:41,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1467 transitions. [2020-10-22 00:36:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:36:41,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:41,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:41,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:36:41,281 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:41,282 INFO L82 PathProgramCache]: Analyzing trace with hash -647802977, now seen corresponding path program 2 times [2020-10-22 00:36:41,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:41,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281752196] [2020-10-22 00:36:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:41,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281752196] [2020-10-22 00:36:41,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:41,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:41,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [665615436] [2020-10-22 00:36:41,331 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:41,332 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:41,335 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-22 00:36:41,335 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:41,434 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:41,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:41,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:41,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:41,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:41,436 INFO L87 Difference]: Start difference. First operand 460 states and 1467 transitions. Second operand 3 states. [2020-10-22 00:36:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:41,445 INFO L93 Difference]: Finished difference Result 442 states and 1398 transitions. [2020-10-22 00:36:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:41,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-22 00:36:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:41,450 INFO L225 Difference]: With dead ends: 442 [2020-10-22 00:36:41,450 INFO L226 Difference]: Without dead ends: 442 [2020-10-22 00:36:41,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-22 00:36:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2020-10-22 00:36:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-22 00:36:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1398 transitions. [2020-10-22 00:36:41,468 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1398 transitions. Word has length 12 [2020-10-22 00:36:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:41,469 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1398 transitions. [2020-10-22 00:36:41,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1398 transitions. [2020-10-22 00:36:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 00:36:41,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:41,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:41,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:36:41,471 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:41,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash -912860165, now seen corresponding path program 1 times [2020-10-22 00:36:41,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:41,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018071649] [2020-10-22 00:36:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:41,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018071649] [2020-10-22 00:36:41,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:41,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:41,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [428146163] [2020-10-22 00:36:41,516 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:41,518 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:41,521 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-10-22 00:36:41,522 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:41,571 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:41,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:41,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:41,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:41,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:41,572 INFO L87 Difference]: Start difference. First operand 442 states and 1398 transitions. Second operand 3 states. [2020-10-22 00:36:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:41,590 INFO L93 Difference]: Finished difference Result 596 states and 1797 transitions. [2020-10-22 00:36:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:41,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-22 00:36:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:41,595 INFO L225 Difference]: With dead ends: 596 [2020-10-22 00:36:41,595 INFO L226 Difference]: Without dead ends: 460 [2020-10-22 00:36:41,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-22 00:36:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 424. [2020-10-22 00:36:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-22 00:36:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1261 transitions. [2020-10-22 00:36:41,613 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1261 transitions. Word has length 13 [2020-10-22 00:36:41,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:41,613 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 1261 transitions. [2020-10-22 00:36:41,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1261 transitions. [2020-10-22 00:36:41,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 00:36:41,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:41,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:41,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:36:41,615 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:41,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1787336884, now seen corresponding path program 1 times [2020-10-22 00:36:41,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:41,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358480201] [2020-10-22 00:36:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:41,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358480201] [2020-10-22 00:36:41,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:41,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:41,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1424733882] [2020-10-22 00:36:41,663 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:41,664 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:41,670 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-10-22 00:36:41,670 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:42,107 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:42,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:42,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:42,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:42,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:42,108 INFO L87 Difference]: Start difference. First operand 424 states and 1261 transitions. Second operand 4 states. [2020-10-22 00:36:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:42,131 INFO L93 Difference]: Finished difference Result 566 states and 1628 transitions. [2020-10-22 00:36:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:36:42,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-22 00:36:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:42,134 INFO L225 Difference]: With dead ends: 566 [2020-10-22 00:36:42,135 INFO L226 Difference]: Without dead ends: 278 [2020-10-22 00:36:42,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-22 00:36:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-10-22 00:36:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-22 00:36:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 791 transitions. [2020-10-22 00:36:42,146 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 791 transitions. Word has length 13 [2020-10-22 00:36:42,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:42,146 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 791 transitions. [2020-10-22 00:36:42,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 791 transitions. [2020-10-22 00:36:42,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 00:36:42,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:42,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:42,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 00:36:42,148 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:42,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:42,148 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 1 times [2020-10-22 00:36:42,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:42,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375093030] [2020-10-22 00:36:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:42,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375093030] [2020-10-22 00:36:42,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:42,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:42,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1566691486] [2020-10-22 00:36:42,223 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:42,226 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:42,231 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-10-22 00:36:42,231 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:42,271 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:42,324 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:42,444 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:42,521 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:42,572 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10384#(not (= 4 ~__unbuffered_cnt~0))] [2020-10-22 00:36:42,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:36:42,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:42,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:36:42,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:42,574 INFO L87 Difference]: Start difference. First operand 278 states and 791 transitions. Second operand 5 states. [2020-10-22 00:36:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:42,657 INFO L93 Difference]: Finished difference Result 292 states and 753 transitions. [2020-10-22 00:36:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:36:42,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-22 00:36:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:42,659 INFO L225 Difference]: With dead ends: 292 [2020-10-22 00:36:42,659 INFO L226 Difference]: Without dead ends: 195 [2020-10-22 00:36:42,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:36:42,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-22 00:36:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-10-22 00:36:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-22 00:36:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 465 transitions. [2020-10-22 00:36:42,669 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 465 transitions. Word has length 14 [2020-10-22 00:36:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:42,670 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 465 transitions. [2020-10-22 00:36:42,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:36:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 465 transitions. [2020-10-22 00:36:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 00:36:42,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:42,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:42,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 00:36:42,671 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:42,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:42,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-10-22 00:36:42,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:42,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912411420] [2020-10-22 00:36:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:42,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912411420] [2020-10-22 00:36:42,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:42,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:36:42,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [675926031] [2020-10-22 00:36:42,788 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:42,790 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:42,797 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-10-22 00:36:42,798 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:43,059 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11077#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 00:36:43,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 00:36:43,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:43,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 00:36:43,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:36:43,061 INFO L87 Difference]: Start difference. First operand 195 states and 465 transitions. Second operand 7 states. [2020-10-22 00:36:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:43,132 INFO L93 Difference]: Finished difference Result 189 states and 428 transitions. [2020-10-22 00:36:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:36:43,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-22 00:36:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:43,135 INFO L225 Difference]: With dead ends: 189 [2020-10-22 00:36:43,135 INFO L226 Difference]: Without dead ends: 150 [2020-10-22 00:36:43,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 00:36:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-22 00:36:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-22 00:36:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-22 00:36:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-10-22 00:36:43,142 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 16 [2020-10-22 00:36:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:43,143 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-10-22 00:36:43,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 00:36:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-10-22 00:36:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 00:36:43,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:43,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:43,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 00:36:43,145 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:43,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1569359463, now seen corresponding path program 1 times [2020-10-22 00:36:43,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:43,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408424405] [2020-10-22 00:36:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:43,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408424405] [2020-10-22 00:36:43,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:43,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:36:43,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [497931484] [2020-10-22 00:36:43,204 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:43,208 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:43,217 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 48 transitions. [2020-10-22 00:36:43,217 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:43,299 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:43,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:43,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:43,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:43,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:43,300 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 4 states. [2020-10-22 00:36:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:43,320 INFO L93 Difference]: Finished difference Result 182 states and 403 transitions. [2020-10-22 00:36:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:36:43,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-22 00:36:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:43,322 INFO L225 Difference]: With dead ends: 182 [2020-10-22 00:36:43,322 INFO L226 Difference]: Without dead ends: 139 [2020-10-22 00:36:43,323 INFO L677 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 [2020-10-22 00:36:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-22 00:36:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-22 00:36:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-22 00:36:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-10-22 00:36:43,329 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 18 [2020-10-22 00:36:43,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:43,329 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-10-22 00:36:43,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-10-22 00:36:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 00:36:43,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:43,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:43,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 00:36:43,331 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 2 times [2020-10-22 00:36:43,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:43,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456379943] [2020-10-22 00:36:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:43,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456379943] [2020-10-22 00:36:43,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:43,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 00:36:43,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [440388320] [2020-10-22 00:36:43,421 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:43,422 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:43,430 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 66 transitions. [2020-10-22 00:36:43,431 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:43,517 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12039#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 00:36:43,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 00:36:43,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:43,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 00:36:43,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-22 00:36:43,518 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 8 states. [2020-10-22 00:36:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:43,593 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-10-22 00:36:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 00:36:43,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-22 00:36:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:43,594 INFO L225 Difference]: With dead ends: 132 [2020-10-22 00:36:43,595 INFO L226 Difference]: Without dead ends: 51 [2020-10-22 00:36:43,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-22 00:36:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-22 00:36:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-22 00:36:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-22 00:36:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-10-22 00:36:43,598 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-10-22 00:36:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:43,598 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-10-22 00:36:43,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 00:36:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-10-22 00:36:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-22 00:36:43,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:43,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:43,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-22 00:36:43,599 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:43,600 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-10-22 00:36:43,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:43,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934638682] [2020-10-22 00:36:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:43,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934638682] [2020-10-22 00:36:43,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:43,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:43,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [429610176] [2020-10-22 00:36:43,631 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:43,633 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:43,643 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 80 transitions. [2020-10-22 00:36:43,643 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:43,666 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:43,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:43,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:43,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:43,667 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-10-22 00:36:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:43,674 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-10-22 00:36:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:43,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-22 00:36:43,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:43,675 INFO L225 Difference]: With dead ends: 50 [2020-10-22 00:36:43,675 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:36:43,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:36:43,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:36:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:36:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:36:43,676 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-22 00:36:43,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:43,677 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:36:43,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:36:43,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:36:43,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-22 00:36:43,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:36:43 BasicIcfg [2020-10-22 00:36:43,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:36:43,683 INFO L168 Benchmark]: Toolchain (without parser) took 7241.78 ms. Allocated memory was 137.9 MB in the beginning and 305.1 MB in the end (delta: 167.2 MB). Free memory was 98.3 MB in the beginning and 213.3 MB in the end (delta: -115.0 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:43,684 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 00:36:43,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.33 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 97.3 MB in the beginning and 153.3 MB in the end (delta: -56.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:43,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 199.2 MB. Free memory was 153.3 MB in the beginning and 151.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:43,687 INFO L168 Benchmark]: Boogie Preprocessor took 30.73 ms. Allocated memory is still 199.2 MB. Free memory was 151.3 MB in the beginning and 149.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:43,687 INFO L168 Benchmark]: RCFGBuilder took 552.38 ms. Allocated memory is still 199.2 MB. Free memory was 149.9 MB in the beginning and 123.9 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:43,688 INFO L168 Benchmark]: TraceAbstraction took 5861.54 ms. Allocated memory was 199.2 MB in the beginning and 305.1 MB in the end (delta: 105.9 MB). Free memory was 123.9 MB in the beginning and 213.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:43,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.33 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 97.3 MB in the beginning and 153.3 MB in the end (delta: -56.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 199.2 MB. Free memory was 153.3 MB in the beginning and 151.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.73 ms. Allocated memory is still 199.2 MB. Free memory was 151.3 MB in the beginning and 149.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 552.38 ms. Allocated memory is still 199.2 MB. Free memory was 149.9 MB in the beginning and 123.9 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5861.54 ms. Allocated memory was 199.2 MB in the beginning and 305.1 MB in the end (delta: 105.9 MB). Free memory was 123.9 MB in the beginning and 213.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1132 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: 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 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 240 SDtfs, 181 SDslu, 323 SDs, 0 SdLazy, 178 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 5504 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...