/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:59:52,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:59:52,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:59:52,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:59:52,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:59:52,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:59:52,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:59:52,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:59:52,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:59:52,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:59:52,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:59:52,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:59:52,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:59:52,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:59:52,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:59:52,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:59:52,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:59:52,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:59:52,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:59:52,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:59:52,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:59:52,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:59:52,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:59:52,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:59:52,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:59:52,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:59:52,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:59:52,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:59:52,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:59:52,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:59:52,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:59:52,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:59:52,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:59:52,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:59:52,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:59:52,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:59:52,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:59:52,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:59:52,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:59:52,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:59:52,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:59:52,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 02:59:52,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:59:52,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:59:52,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:59:52,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:59:52,202 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:59:52,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:59:52,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:59:52,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:59:52,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:59:52,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:59:52,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:59:52,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:59:52,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:59:52,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:59:52,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:59:52,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:59:52,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:59:52,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:59:52,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:59:52,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:59:52,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:59:52,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:59:52,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:59:52,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:59:52,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:59:52,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:59:52,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:59:52,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:59:52,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:59:52,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:59:52,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:59:52,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:59:52,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:59:52,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:59:52,552 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:59:52,553 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:59:52,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5267709b3/f0bafa4a74c24b29b7e843d5992a99aa/FLAG63b9baa40 [2020-10-15 02:59:53,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:59:53,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:59:53,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5267709b3/f0bafa4a74c24b29b7e843d5992a99aa/FLAG63b9baa40 [2020-10-15 02:59:53,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5267709b3/f0bafa4a74c24b29b7e843d5992a99aa [2020-10-15 02:59:53,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:59:53,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:59:53,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:59:53,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:59:53,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:59:53,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:53" (1/1) ... [2020-10-15 02:59:53,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf2a9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:53, skipping insertion in model container [2020-10-15 02:59:53,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:53" (1/1) ... [2020-10-15 02:59:53,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:59:53,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:59:54,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:59:54,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:59:54,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:59:54,324 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:59:54,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54 WrapperNode [2020-10-15 02:59:54,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:59:54,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:59:54,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:59:54,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:59:54,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (1/1) ... [2020-10-15 02:59:54,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (1/1) ... [2020-10-15 02:59:54,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (1/1) ... [2020-10-15 02:59:54,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (1/1) ... [2020-10-15 02:59:54,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (1/1) ... [2020-10-15 02:59:54,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (1/1) ... [2020-10-15 02:59:54,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (1/1) ... [2020-10-15 02:59:54,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:59:54,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:59:54,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:59:54,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:59:54,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:59:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:59:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:59:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:59:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:59:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:59:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:59:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 02:59:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:59:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:59:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:59:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:59:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:59:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:59:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:59:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:59:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:59:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:59:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:59:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:59:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:59:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:59:55,995 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:59:55,996 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:59:56,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:56 BoogieIcfgContainer [2020-10-15 02:59:56,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:59:56,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:59:56,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:59:56,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:59:56,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:59:53" (1/3) ... [2020-10-15 02:59:56,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f85f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:56, skipping insertion in model container [2020-10-15 02:59:56,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:54" (2/3) ... [2020-10-15 02:59:56,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f85f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:56, skipping insertion in model container [2020-10-15 02:59:56,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:56" (3/3) ... [2020-10-15 02:59:56,013 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:59:56,024 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:59:56,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:59:56,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:59:56,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:59:56,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:59:56,079 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:59:56,079 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:59:56,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:59:56,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:59:56,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:59:56,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:59:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states. [2020-10-15 02:59:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 02:59:56,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:56,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:59:56,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:56,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1212431174, now seen corresponding path program 1 times [2020-10-15 02:59:56,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:56,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103149089] [2020-10-15 02:59:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:57,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:57,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:01,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:01,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 03:00:01,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:00:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:00:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:01,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:00:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 03:00:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 03:00:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:00:02,111 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:00:02,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:02,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:02,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:02,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:02,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:00:02,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:02,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:00:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:00:02,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:02,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103149089] [2020-10-15 03:00:02,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:02,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:00:02,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841982217] [2020-10-15 03:00:02,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:00:02,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:02,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:00:02,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:00:02,212 INFO L87 Difference]: Start difference. First operand 317 states. Second operand 4 states. [2020-10-15 03:00:02,532 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 03:00:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:04,281 INFO L93 Difference]: Finished difference Result 641 states and 1120 transitions. [2020-10-15 03:00:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:00:04,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-15 03:00:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:04,304 INFO L225 Difference]: With dead ends: 641 [2020-10-15 03:00:04,304 INFO L226 Difference]: Without dead ends: 514 [2020-10-15 03:00:04,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:00:04,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-15 03:00:04,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 512. [2020-10-15 03:00:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-15 03:00:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 761 transitions. [2020-10-15 03:00:04,401 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 761 transitions. Word has length 150 [2020-10-15 03:00:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:04,402 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 761 transitions. [2020-10-15 03:00:04,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:00:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 761 transitions. [2020-10-15 03:00:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 03:00:04,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:04,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:04,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:00:04,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:04,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2117865266, now seen corresponding path program 1 times [2020-10-15 03:00:04,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:04,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561305976] [2020-10-15 03:00:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:04,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:05,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:09,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:09,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 03:00:09,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:00:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 03:00:09,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:09,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:00:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 03:00:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 03:00:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:00:09,802 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:00:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:09,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:09,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:09,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:00:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:09,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:00:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:00:09,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:09,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561305976] [2020-10-15 03:00:09,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:09,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:00:09,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067076318] [2020-10-15 03:00:09,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:00:09,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:09,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:00:09,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:00:09,873 INFO L87 Difference]: Start difference. First operand 512 states and 761 transitions. Second operand 4 states. [2020-10-15 03:00:10,072 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 03:00:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:11,257 INFO L93 Difference]: Finished difference Result 1076 states and 1646 transitions. [2020-10-15 03:00:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:00:11,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-15 03:00:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:11,266 INFO L225 Difference]: With dead ends: 1076 [2020-10-15 03:00:11,266 INFO L226 Difference]: Without dead ends: 884 [2020-10-15 03:00:11,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:00:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-10-15 03:00:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 882. [2020-10-15 03:00:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-15 03:00:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1323 transitions. [2020-10-15 03:00:11,323 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1323 transitions. Word has length 150 [2020-10-15 03:00:11,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:11,324 INFO L479 AbstractCegarLoop]: Abstraction has 882 states and 1323 transitions. [2020-10-15 03:00:11,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:00:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1323 transitions. [2020-10-15 03:00:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 03:00:11,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:11,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:11,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:00:11,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:11,329 INFO L82 PathProgramCache]: Analyzing trace with hash -922154316, now seen corresponding path program 1 times [2020-10-15 03:00:11,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:11,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654110210] [2020-10-15 03:00:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:16,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:16,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 03:00:16,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:00:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:00:16,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:16,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:00:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:00:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 03:00:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:16,849 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:00:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:16,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:16,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:16,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:16,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:00:16,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:16,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:00:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:00:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:16,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654110210] [2020-10-15 03:00:16,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:16,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:00:16,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412993673] [2020-10-15 03:00:16,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:00:16,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:16,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:00:16,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:00:16,965 INFO L87 Difference]: Start difference. First operand 882 states and 1323 transitions. Second operand 5 states. [2020-10-15 03:00:19,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:19,252 INFO L93 Difference]: Finished difference Result 2574 states and 3856 transitions. [2020-10-15 03:00:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:00:19,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-15 03:00:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:19,267 INFO L225 Difference]: With dead ends: 2574 [2020-10-15 03:00:19,267 INFO L226 Difference]: Without dead ends: 1703 [2020-10-15 03:00:19,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:00:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-15 03:00:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1701. [2020-10-15 03:00:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-10-15 03:00:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2526 transitions. [2020-10-15 03:00:19,363 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2526 transitions. Word has length 150 [2020-10-15 03:00:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:19,364 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2526 transitions. [2020-10-15 03:00:19,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:00:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2526 transitions. [2020-10-15 03:00:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-15 03:00:19,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:19,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:19,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:00:19,369 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:19,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1383670655, now seen corresponding path program 1 times [2020-10-15 03:00:19,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:19,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180084381] [2020-10-15 03:00:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:19,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-15 03:00:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:00:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:00:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:24,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:00:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:00:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:00:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:00:24,746 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:00:24,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:24,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:24,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:24,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:24,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:00:24,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:24,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:00:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:00:24,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:24,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180084381] [2020-10-15 03:00:24,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:24,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:00:24,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786827952] [2020-10-15 03:00:24,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:00:24,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:00:24,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:00:24,885 INFO L87 Difference]: Start difference. First operand 1701 states and 2526 transitions. Second operand 5 states. [2020-10-15 03:00:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:27,559 INFO L93 Difference]: Finished difference Result 4819 states and 7168 transitions. [2020-10-15 03:00:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:00:27,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-15 03:00:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:27,575 INFO L225 Difference]: With dead ends: 4819 [2020-10-15 03:00:27,575 INFO L226 Difference]: Without dead ends: 3285 [2020-10-15 03:00:27,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:00:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2020-10-15 03:00:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3283. [2020-10-15 03:00:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3283 states. [2020-10-15 03:00:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 4826 transitions. [2020-10-15 03:00:27,756 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 4826 transitions. Word has length 151 [2020-10-15 03:00:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:27,757 INFO L479 AbstractCegarLoop]: Abstraction has 3283 states and 4826 transitions. [2020-10-15 03:00:27,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:00:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 4826 transitions. [2020-10-15 03:00:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 03:00:27,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:27,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:27,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:00:27,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:27,765 INFO L82 PathProgramCache]: Analyzing trace with hash -26576937, now seen corresponding path program 1 times [2020-10-15 03:00:27,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:27,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273357129] [2020-10-15 03:00:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:27,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:28,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:31,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:32,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:32,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-15 03:00:32,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:00:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:00:32,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:32,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:00:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:00:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:00:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:33,069 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:00:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:33,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:33,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:00:33,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:33,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:00:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:00:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:33,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273357129] [2020-10-15 03:00:33,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:33,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:00:33,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110757132] [2020-10-15 03:00:33,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:00:33,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:33,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:00:33,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:00:33,161 INFO L87 Difference]: Start difference. First operand 3283 states and 4826 transitions. Second operand 5 states. [2020-10-15 03:00:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:35,948 INFO L93 Difference]: Finished difference Result 8716 states and 12806 transitions. [2020-10-15 03:00:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:00:35,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-15 03:00:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:35,976 INFO L225 Difference]: With dead ends: 8716 [2020-10-15 03:00:35,976 INFO L226 Difference]: Without dead ends: 5710 [2020-10-15 03:00:35,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:00:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2020-10-15 03:00:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 5708. [2020-10-15 03:00:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5708 states. [2020-10-15 03:00:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 8262 transitions. [2020-10-15 03:00:36,387 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 8262 transitions. Word has length 152 [2020-10-15 03:00:36,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:36,389 INFO L479 AbstractCegarLoop]: Abstraction has 5708 states and 8262 transitions. [2020-10-15 03:00:36,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:00:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 8262 transitions. [2020-10-15 03:00:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-15 03:00:36,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:36,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:36,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:00:36,399 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1230708254, now seen corresponding path program 1 times [2020-10-15 03:00:36,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:36,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956429039] [2020-10-15 03:00:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:41,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-15 03:00:41,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:00:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:00:41,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:41,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:41,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:00:41,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:00:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-15 03:00:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:00:41,704 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:00:41,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:41,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:41,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:41,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:00:41,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:41,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:00:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:00:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:41,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956429039] [2020-10-15 03:00:41,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:41,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:00:41,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660549597] [2020-10-15 03:00:41,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:00:41,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:41,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:00:41,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:00:41,811 INFO L87 Difference]: Start difference. First operand 5708 states and 8262 transitions. Second operand 5 states. [2020-10-15 03:00:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:44,325 INFO L93 Difference]: Finished difference Result 15553 states and 22409 transitions. [2020-10-15 03:00:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:00:44,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-15 03:00:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:44,365 INFO L225 Difference]: With dead ends: 15553 [2020-10-15 03:00:44,365 INFO L226 Difference]: Without dead ends: 9907 [2020-10-15 03:00:44,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:00:44,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9907 states. [2020-10-15 03:00:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9907 to 9905. [2020-10-15 03:00:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9905 states. [2020-10-15 03:00:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9905 states to 9905 states and 14109 transitions. [2020-10-15 03:00:45,103 INFO L78 Accepts]: Start accepts. Automaton has 9905 states and 14109 transitions. Word has length 153 [2020-10-15 03:00:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:45,104 INFO L479 AbstractCegarLoop]: Abstraction has 9905 states and 14109 transitions. [2020-10-15 03:00:45,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:00:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9905 states and 14109 transitions. [2020-10-15 03:00:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-15 03:00:45,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:45,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:45,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:00:45,119 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:45,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1634311926, now seen corresponding path program 1 times [2020-10-15 03:00:45,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:45,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844882066] [2020-10-15 03:00:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:45,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:45,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:47,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:50,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 03:00:50,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:00:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:00:50,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:50,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:00:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:00:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:00:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:00:50,444 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:00:50,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:50,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:50,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:50,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:00:50,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:50,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:00:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:00:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:00:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:50,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844882066] [2020-10-15 03:00:50,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:50,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:00:50,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106040551] [2020-10-15 03:00:50,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:00:50,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:50,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:00:50,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:00:50,619 INFO L87 Difference]: Start difference. First operand 9905 states and 14109 transitions. Second operand 5 states. [2020-10-15 03:00:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:54,303 INFO L93 Difference]: Finished difference Result 28664 states and 40789 transitions. [2020-10-15 03:00:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:00:54,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-15 03:00:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:54,352 INFO L225 Difference]: With dead ends: 28664 [2020-10-15 03:00:54,353 INFO L226 Difference]: Without dead ends: 19210 [2020-10-15 03:00:54,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:00:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19210 states. [2020-10-15 03:00:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19210 to 19208. [2020-10-15 03:00:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19208 states. [2020-10-15 03:00:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19208 states to 19208 states and 27008 transitions. [2020-10-15 03:00:55,752 INFO L78 Accepts]: Start accepts. Automaton has 19208 states and 27008 transitions. Word has length 154 [2020-10-15 03:00:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:55,753 INFO L479 AbstractCegarLoop]: Abstraction has 19208 states and 27008 transitions. [2020-10-15 03:00:55,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:00:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 19208 states and 27008 transitions. [2020-10-15 03:00:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-15 03:00:55,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:55,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:55,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:00:55,782 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1084015422, now seen corresponding path program 1 times [2020-10-15 03:00:55,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:55,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817114012] [2020-10-15 03:00:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:55,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:55,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:55,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:55,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:00,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-15 03:01:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:01:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:01:00,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:00,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:01:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:01:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 03:01:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:01:01,057 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:01:01,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:01:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:01,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:01,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:01:01,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:01:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:01:01,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:01,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:01:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:01:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:01:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:01:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:01:01,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817114012] [2020-10-15 03:01:01,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:01:01,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:01:01,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971175422] [2020-10-15 03:01:01,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:01:01,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:01:01,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:01:01,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:01:01,108 INFO L87 Difference]: Start difference. First operand 19208 states and 27008 transitions. Second operand 5 states. [2020-10-15 03:01:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:01:03,458 INFO L93 Difference]: Finished difference Result 33223 states and 46703 transitions. [2020-10-15 03:01:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:01:03,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-15 03:01:03,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:01:03,505 INFO L225 Difference]: With dead ends: 33223 [2020-10-15 03:01:03,505 INFO L226 Difference]: Without dead ends: 14115 [2020-10-15 03:01:03,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:01:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14115 states. [2020-10-15 03:01:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14115 to 14114. [2020-10-15 03:01:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14114 states. [2020-10-15 03:01:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14114 states to 14114 states and 19842 transitions. [2020-10-15 03:01:04,488 INFO L78 Accepts]: Start accepts. Automaton has 14114 states and 19842 transitions. Word has length 155 [2020-10-15 03:01:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:01:04,488 INFO L479 AbstractCegarLoop]: Abstraction has 14114 states and 19842 transitions. [2020-10-15 03:01:04,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:01:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 14114 states and 19842 transitions. [2020-10-15 03:01:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-15 03:01:04,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:01:04,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:01:04,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:01:04,519 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:01:04,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:01:04,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1077267149, now seen corresponding path program 1 times [2020-10-15 03:01:04,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:01:04,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895264606] [2020-10-15 03:01:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:01:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:04,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:04,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:09,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:09,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-15 03:01:09,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:01:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:01:09,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:09,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:01:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:01:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 03:01:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:01:09,812 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:01:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:01:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:09,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:09,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:09,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:01:09,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:01:09,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:01:09,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:09,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:01:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:01:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:01:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:01:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:01:09,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895264606] [2020-10-15 03:01:09,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:01:09,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:01:09,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898693186] [2020-10-15 03:01:09,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:01:09,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:01:09,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:01:09,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:01:09,934 INFO L87 Difference]: Start difference. First operand 14114 states and 19842 transitions. Second operand 6 states. [2020-10-15 03:01:10,156 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:01:12,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:01:12,190 INFO L93 Difference]: Finished difference Result 27156 states and 38395 transitions. [2020-10-15 03:01:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:01:12,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-10-15 03:01:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:01:12,225 INFO L225 Difference]: With dead ends: 27156 [2020-10-15 03:01:12,226 INFO L226 Difference]: Without dead ends: 14114 [2020-10-15 03:01:12,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:01:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14114 states. [2020-10-15 03:01:13,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14114 to 14114. [2020-10-15 03:01:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14114 states. [2020-10-15 03:01:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14114 states to 14114 states and 19606 transitions. [2020-10-15 03:01:13,251 INFO L78 Accepts]: Start accepts. Automaton has 14114 states and 19606 transitions. Word has length 163 [2020-10-15 03:01:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:01:13,252 INFO L479 AbstractCegarLoop]: Abstraction has 14114 states and 19606 transitions. [2020-10-15 03:01:13,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:01:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 14114 states and 19606 transitions. [2020-10-15 03:01:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-15 03:01:13,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:01:13,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:01:13,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:01:13,269 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:01:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:01:13,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1708070248, now seen corresponding path program 1 times [2020-10-15 03:01:13,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:01:13,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818306831] [2020-10-15 03:01:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:01:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:13,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:18,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:18,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-15 03:01:18,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:01:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:01:18,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:18,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:01:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:01:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-15 03:01:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:01:18,556 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:01:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:01:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:18,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:18,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:01:18,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:01:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:01:18,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:18,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:01:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:01:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:01:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:01:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:01:18,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818306831] [2020-10-15 03:01:18,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:01:18,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:01:18,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738873242] [2020-10-15 03:01:18,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:01:18,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:01:18,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:01:18,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:01:18,641 INFO L87 Difference]: Start difference. First operand 14114 states and 19606 transitions. Second operand 5 states. [2020-10-15 03:01:22,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:01:22,890 INFO L93 Difference]: Finished difference Result 41183 states and 56977 transitions. [2020-10-15 03:01:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:01:22,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-15 03:01:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:01:22,943 INFO L225 Difference]: With dead ends: 41183 [2020-10-15 03:01:22,943 INFO L226 Difference]: Without dead ends: 27240 [2020-10-15 03:01:22,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:01:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27240 states. [2020-10-15 03:01:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27240 to 27238. [2020-10-15 03:01:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27238 states. [2020-10-15 03:01:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27238 states to 27238 states and 37258 transitions. [2020-10-15 03:01:25,255 INFO L78 Accepts]: Start accepts. Automaton has 27238 states and 37258 transitions. Word has length 163 [2020-10-15 03:01:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:01:25,255 INFO L479 AbstractCegarLoop]: Abstraction has 27238 states and 37258 transitions. [2020-10-15 03:01:25,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:01:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 27238 states and 37258 transitions. [2020-10-15 03:01:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 03:01:25,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:01:25,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:01:25,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:01:25,295 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:01:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:01:25,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1670239053, now seen corresponding path program 1 times [2020-10-15 03:01:25,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:01:25,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970610882] [2020-10-15 03:01:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:01:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:25,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:30,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:30,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 03:01:30,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:01:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:01:30,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:30,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 03:01:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-15 03:01:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 03:01:30,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:01:30,901 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:01:30,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:01:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:30,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:30,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:01:30,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:01:30,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:01:30,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:30,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:01:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:01:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:01:30,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:01:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:01:30,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970610882] [2020-10-15 03:01:30,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:01:30,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 03:01:30,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955222127] [2020-10-15 03:01:30,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 03:01:30,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:01:30,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 03:01:30,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:01:30,974 INFO L87 Difference]: Start difference. First operand 27238 states and 37258 transitions. Second operand 12 states. [2020-10-15 03:01:31,617 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 190 [2020-10-15 03:03:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:30,255 INFO L93 Difference]: Finished difference Result 105208 states and 151040 transitions. [2020-10-15 03:03:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:03:30,255 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 164 [2020-10-15 03:03:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:30,379 INFO L225 Difference]: With dead ends: 105208 [2020-10-15 03:03:30,380 INFO L226 Difference]: Without dead ends: 93882 [2020-10-15 03:03:30,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=172, Invalid=625, Unknown=15, NotChecked=0, Total=812 [2020-10-15 03:03:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93882 states. [2020-10-15 03:03:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93882 to 35302. [2020-10-15 03:03:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35302 states. [2020-10-15 03:03:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35302 states to 35302 states and 46738 transitions. [2020-10-15 03:03:34,247 INFO L78 Accepts]: Start accepts. Automaton has 35302 states and 46738 transitions. Word has length 164 [2020-10-15 03:03:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:34,248 INFO L479 AbstractCegarLoop]: Abstraction has 35302 states and 46738 transitions. [2020-10-15 03:03:34,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 03:03:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand 35302 states and 46738 transitions. [2020-10-15 03:03:34,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 03:03:34,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:34,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:34,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:03:34,271 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:34,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1655513132, now seen corresponding path program 1 times [2020-10-15 03:03:34,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:34,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651378272] [2020-10-15 03:03:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:39,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 03:03:39,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:03:39,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:03:39,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:39,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:03:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:03:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:39,578 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:03:39,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:39,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:03:39,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:39,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:39,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651378272] [2020-10-15 03:03:39,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:39,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:39,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131756647] [2020-10-15 03:03:39,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:39,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:39,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:39,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:39,619 INFO L87 Difference]: Start difference. First operand 35302 states and 46738 transitions. Second operand 5 states. [2020-10-15 03:03:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:42,858 INFO L93 Difference]: Finished difference Result 58391 states and 77235 transitions. [2020-10-15 03:03:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:42,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-15 03:03:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:42,992 INFO L225 Difference]: With dead ends: 58391 [2020-10-15 03:03:42,993 INFO L226 Difference]: Without dead ends: 23183 [2020-10-15 03:03:43,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:03:43,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23183 states. [2020-10-15 03:03:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23183 to 23183. [2020-10-15 03:03:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23183 states. [2020-10-15 03:03:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23183 states to 23183 states and 30611 transitions. [2020-10-15 03:03:44,673 INFO L78 Accepts]: Start accepts. Automaton has 23183 states and 30611 transitions. Word has length 164 [2020-10-15 03:03:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:44,673 INFO L479 AbstractCegarLoop]: Abstraction has 23183 states and 30611 transitions. [2020-10-15 03:03:44,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 23183 states and 30611 transitions. [2020-10-15 03:03:44,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-15 03:03:44,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:44,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:44,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:03:44,694 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:44,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1949575288, now seen corresponding path program 1 times [2020-10-15 03:03:44,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:44,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410108877] [2020-10-15 03:03:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:44,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking...