/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:28:40,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:28:41,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:28:41,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:28:41,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:28:41,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:28:41,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:28:41,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:28:41,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:28:41,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:28:41,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:28:41,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:28:41,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:28:41,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:28:41,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:28:41,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:28:41,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:28:41,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:28:41,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:28:41,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:28:41,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:28:41,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:28:41,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:28:41,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:28:41,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:28:41,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:28:41,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:28:41,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:28:41,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:28:41,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:28:41,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:28:41,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:28:41,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:28:41,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:28:41,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:28:41,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:28:41,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:28:41,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:28:41,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:28:41,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:28:41,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:28:41,123 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 [2020-10-14 09:28:41,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:28:41,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:28:41,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:28:41,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:28:41,162 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:28:41,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:28:41,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:28:41,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:28:41,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:28:41,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:28:41,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:28:41,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:28:41,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:28:41,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:28:41,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:28:41,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:28:41,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:28:41,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:28:41,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:28:41,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:28:41,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:28:41,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:28:41,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:28:41,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:28:41,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:28:41,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:28:41,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:28:41,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:28:41,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:28:41,168 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:28:41,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:28:41,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:28:41,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:28:41,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:28:41,515 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:28:41,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:28:41,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e26b940a/54a6aebf8160497495757fcc988830b9/FLAG088ea79ad [2020-10-14 09:28:42,140 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:28:42,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:28:42,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e26b940a/54a6aebf8160497495757fcc988830b9/FLAG088ea79ad [2020-10-14 09:28:42,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e26b940a/54a6aebf8160497495757fcc988830b9 [2020-10-14 09:28:42,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:28:42,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:28:42,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:28:42,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:28:42,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:28:42,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:28:42" (1/1) ... [2020-10-14 09:28:42,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe29230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:42, skipping insertion in model container [2020-10-14 09:28:42,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:28:42" (1/1) ... [2020-10-14 09:28:42,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:28:42,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:28:43,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:28:43,244 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:28:43,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:28:43,557 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:28:43,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43 WrapperNode [2020-10-14 09:28:43,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:28:43,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:28:43,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:28:43,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:28:43,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (1/1) ... [2020-10-14 09:28:43,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (1/1) ... [2020-10-14 09:28:43,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (1/1) ... [2020-10-14 09:28:43,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (1/1) ... [2020-10-14 09:28:43,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (1/1) ... [2020-10-14 09:28:43,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (1/1) ... [2020-10-14 09:28:43,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (1/1) ... [2020-10-14 09:28:43,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:28:43,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:28:43,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:28:43,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:28:43,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (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 [2020-10-14 09:28:43,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:28:43,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:28:43,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:28:43,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:28:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:28:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:28:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:28:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:28:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:28:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:28:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:28:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:28:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:28:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:28:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:28:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:28:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:28:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:28:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:28:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:28:45,463 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:28:45,464 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:28:45,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:28:45 BoogieIcfgContainer [2020-10-14 09:28:45,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:28:45,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:28:45,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:28:45,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:28:45,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:28:42" (1/3) ... [2020-10-14 09:28:45,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355c2e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:28:45, skipping insertion in model container [2020-10-14 09:28:45,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:43" (2/3) ... [2020-10-14 09:28:45,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355c2e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:28:45, skipping insertion in model container [2020-10-14 09:28:45,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:28:45" (3/3) ... [2020-10-14 09:28:45,481 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:28:45,492 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:28:45,501 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-14 09:28:45,516 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-14 09:28:45,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:28:45,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:28:45,544 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:28:45,544 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:28:45,544 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:28:45,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:28:45,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:28:45,545 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:28:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states. [2020-10-14 09:28:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:28:45,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:45,594 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] [2020-10-14 09:28:45,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:45,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:45,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2097165427, now seen corresponding path program 1 times [2020-10-14 09:28:45,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:45,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547451256] [2020-10-14 09:28:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:49,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:51,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:51,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:28:51,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:28:51,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 09:28:51,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:51,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:28:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 09:28:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 09:28:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:28:51,781 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:28:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:51,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:51,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:51,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:28:51,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:51,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:28:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:28:51,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547451256] [2020-10-14 09:28:51,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:51,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:28:51,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70057290] [2020-10-14 09:28:51,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:28:51,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:51,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:28:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:28:51,963 INFO L87 Difference]: Start difference. First operand 418 states. Second operand 4 states. [2020-10-14 09:28:52,535 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-14 09:28:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:55,475 INFO L93 Difference]: Finished difference Result 760 states and 1332 transitions. [2020-10-14 09:28:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:28:55,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 09:28:55,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:55,500 INFO L225 Difference]: With dead ends: 760 [2020-10-14 09:28:55,500 INFO L226 Difference]: Without dead ends: 599 [2020-10-14 09:28:55,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:28:55,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-14 09:28:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-10-14 09:28:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-14 09:28:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 876 transitions. [2020-10-14 09:28:55,597 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 876 transitions. Word has length 152 [2020-10-14 09:28:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:55,598 INFO L479 AbstractCegarLoop]: Abstraction has 597 states and 876 transitions. [2020-10-14 09:28:55,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:28:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 876 transitions. [2020-10-14 09:28:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:28:55,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:55,605 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] [2020-10-14 09:28:55,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:28:55,606 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash 223271117, now seen corresponding path program 1 times [2020-10-14 09:28:55,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:55,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369495414] [2020-10-14 09:28:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:00,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:00,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:29:00,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:29:00,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:29:00,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:00,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:29:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:29:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 09:29:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:29:01,043 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:29:01,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:01,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:01,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:01,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:29:01,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:01,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:29:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:29:01,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369495414] [2020-10-14 09:29:01,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:01,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:29:01,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726705430] [2020-10-14 09:29:01,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:29:01,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:01,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:29:01,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:01,113 INFO L87 Difference]: Start difference. First operand 597 states and 876 transitions. Second operand 4 states. [2020-10-14 09:29:01,376 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-14 09:29:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:03,504 INFO L93 Difference]: Finished difference Result 1198 states and 1815 transitions. [2020-10-14 09:29:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:29:03,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 09:29:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:03,511 INFO L225 Difference]: With dead ends: 1198 [2020-10-14 09:29:03,512 INFO L226 Difference]: Without dead ends: 985 [2020-10-14 09:29:03,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:29:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2020-10-14 09:29:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 983. [2020-10-14 09:29:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-10-14 09:29:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1468 transitions. [2020-10-14 09:29:03,573 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1468 transitions. Word has length 152 [2020-10-14 09:29:03,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:03,575 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1468 transitions. [2020-10-14 09:29:03,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:29:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1468 transitions. [2020-10-14 09:29:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:29:03,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:03,582 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] [2020-10-14 09:29:03,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:29:03,583 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:03,584 INFO L82 PathProgramCache]: Analyzing trace with hash 222932493, now seen corresponding path program 1 times [2020-10-14 09:29:03,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:03,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28525167] [2020-10-14 09:29:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:03,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:08,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:29:08,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:29:08,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:29:08,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:08,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:29:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:29:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:29:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:29:09,107 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:29:09,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:09,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:09,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:09,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:09,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:29:09,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:09,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:29:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:29:09,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28525167] [2020-10-14 09:29:09,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:09,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:29:09,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052693906] [2020-10-14 09:29:09,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:29:09,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:09,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:29:09,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:29:09,250 INFO L87 Difference]: Start difference. First operand 983 states and 1468 transitions. Second operand 5 states. [2020-10-14 09:29:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:12,724 INFO L93 Difference]: Finished difference Result 2864 states and 4265 transitions. [2020-10-14 09:29:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:29:12,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 09:29:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:12,736 INFO L225 Difference]: With dead ends: 2864 [2020-10-14 09:29:12,736 INFO L226 Difference]: Without dead ends: 1892 [2020-10-14 09:29:12,740 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 [2020-10-14 09:29:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2020-10-14 09:29:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1858. [2020-10-14 09:29:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-10-14 09:29:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2753 transitions. [2020-10-14 09:29:12,809 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2753 transitions. Word has length 152 [2020-10-14 09:29:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:12,809 INFO L479 AbstractCegarLoop]: Abstraction has 1858 states and 2753 transitions. [2020-10-14 09:29:12,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:29:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2753 transitions. [2020-10-14 09:29:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 09:29:12,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:12,813 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] [2020-10-14 09:29:12,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:29:12,814 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:12,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:12,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2104914598, now seen corresponding path program 1 times [2020-10-14 09:29:12,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:12,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236666696] [2020-10-14 09:29:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:13,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:13,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:13,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:17,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:17,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 09:29:17,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:29:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:29:17,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:17,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:29:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:29:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:29:17,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:29:18,145 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:29:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:18,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:18,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:18,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:18,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:18,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:29:18,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:18,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:29:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:29:18,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236666696] [2020-10-14 09:29:18,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:18,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:29:18,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72041709] [2020-10-14 09:29:18,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:29:18,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:18,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:29:18,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:18,202 INFO L87 Difference]: Start difference. First operand 1858 states and 2753 transitions. Second operand 4 states. [2020-10-14 09:29:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:21,237 INFO L93 Difference]: Finished difference Result 5539 states and 8209 transitions. [2020-10-14 09:29:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:29:21,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-14 09:29:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:21,256 INFO L225 Difference]: With dead ends: 5539 [2020-10-14 09:29:21,257 INFO L226 Difference]: Without dead ends: 3704 [2020-10-14 09:29:21,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2020-10-14 09:29:21,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 1861. [2020-10-14 09:29:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2020-10-14 09:29:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2757 transitions. [2020-10-14 09:29:21,364 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2757 transitions. Word has length 153 [2020-10-14 09:29:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:21,364 INFO L479 AbstractCegarLoop]: Abstraction has 1861 states and 2757 transitions. [2020-10-14 09:29:21,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:29:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2757 transitions. [2020-10-14 09:29:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 09:29:21,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:21,368 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, 1, 1, 1] [2020-10-14 09:29:21,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:29:21,369 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:21,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:21,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1712534834, now seen corresponding path program 1 times [2020-10-14 09:29:21,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:21,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737482324] [2020-10-14 09:29:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:21,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:24,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:26,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:26,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 09:29:26,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:29:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:29:26,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:26,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:29:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:29:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 09:29:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:26,748 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:29:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:26,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:29:26,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:26,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:29:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:29:26,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737482324] [2020-10-14 09:29:26,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:26,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:29:26,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775067733] [2020-10-14 09:29:26,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:29:26,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:26,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:29:26,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:29:26,840 INFO L87 Difference]: Start difference. First operand 1861 states and 2757 transitions. Second operand 5 states. [2020-10-14 09:29:29,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:29,909 INFO L93 Difference]: Finished difference Result 5396 states and 7964 transitions. [2020-10-14 09:29:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:29:29,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-14 09:29:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:29,926 INFO L225 Difference]: With dead ends: 5396 [2020-10-14 09:29:29,927 INFO L226 Difference]: Without dead ends: 3579 [2020-10-14 09:29:29,932 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 [2020-10-14 09:29:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2020-10-14 09:29:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3535. [2020-10-14 09:29:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-10-14 09:29:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5187 transitions. [2020-10-14 09:29:30,083 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5187 transitions. Word has length 154 [2020-10-14 09:29:30,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:30,084 INFO L479 AbstractCegarLoop]: Abstraction has 3535 states and 5187 transitions. [2020-10-14 09:29:30,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:29:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5187 transitions. [2020-10-14 09:29:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 09:29:30,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:30,090 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] [2020-10-14 09:29:30,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:29:30,091 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:30,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:30,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1804406665, now seen corresponding path program 1 times [2020-10-14 09:29:30,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:30,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538044097] [2020-10-14 09:29:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:30,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:33,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:33,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:35,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:35,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 09:29:35,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:29:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:29:35,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:35,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:29:35,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 09:29:35,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:29:35,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:35,376 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:29:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:35,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:29:35,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:35,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:29:35,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538044097] [2020-10-14 09:29:35,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:35,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:29:35,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928060202] [2020-10-14 09:29:35,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:29:35,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:35,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:29:35,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:35,433 INFO L87 Difference]: Start difference. First operand 3535 states and 5187 transitions. Second operand 4 states. [2020-10-14 09:29:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:38,564 INFO L93 Difference]: Finished difference Result 10340 states and 15192 transitions. [2020-10-14 09:29:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:29:38,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-14 09:29:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:38,593 INFO L225 Difference]: With dead ends: 10340 [2020-10-14 09:29:38,593 INFO L226 Difference]: Without dead ends: 7011 [2020-10-14 09:29:38,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7011 states. [2020-10-14 09:29:38,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7011 to 3541. [2020-10-14 09:29:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3541 states. [2020-10-14 09:29:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 5195 transitions. [2020-10-14 09:29:38,803 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 5195 transitions. Word has length 155 [2020-10-14 09:29:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:38,804 INFO L479 AbstractCegarLoop]: Abstraction has 3541 states and 5195 transitions. [2020-10-14 09:29:38,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:29:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 5195 transitions. [2020-10-14 09:29:38,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 09:29:38,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:38,812 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] [2020-10-14 09:29:38,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:29:38,813 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:38,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1863426865, now seen corresponding path program 1 times [2020-10-14 09:29:38,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:38,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718898829] [2020-10-14 09:29:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:38,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:40,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:43,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:43,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 09:29:43,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:29:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:29:43,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:43,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:29:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:29:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 09:29:43,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:29:44,250 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:29:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:44,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:44,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:44,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:44,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:29:44,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:44,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:44,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:29:44,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718898829] [2020-10-14 09:29:44,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:44,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:29:44,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690896630] [2020-10-14 09:29:44,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:29:44,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:44,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:29:44,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:29:44,323 INFO L87 Difference]: Start difference. First operand 3541 states and 5195 transitions. Second operand 5 states. [2020-10-14 09:29:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:47,549 INFO L93 Difference]: Finished difference Result 9361 states and 13722 transitions. [2020-10-14 09:29:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:29:47,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 09:29:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:47,572 INFO L225 Difference]: With dead ends: 9361 [2020-10-14 09:29:47,572 INFO L226 Difference]: Without dead ends: 6131 [2020-10-14 09:29:47,579 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 [2020-10-14 09:29:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2020-10-14 09:29:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6101. [2020-10-14 09:29:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6101 states. [2020-10-14 09:29:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6101 states to 6101 states and 8816 transitions. [2020-10-14 09:29:47,911 INFO L78 Accepts]: Start accepts. Automaton has 6101 states and 8816 transitions. Word has length 156 [2020-10-14 09:29:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:47,911 INFO L479 AbstractCegarLoop]: Abstraction has 6101 states and 8816 transitions. [2020-10-14 09:29:47,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:29:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 6101 states and 8816 transitions. [2020-10-14 09:29:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 09:29:47,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:47,923 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] [2020-10-14 09:29:47,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:29:47,924 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:47,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2113814024, now seen corresponding path program 1 times [2020-10-14 09:29:47,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:47,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572391923] [2020-10-14 09:29:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:47,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:48,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:48,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:52,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:52,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 09:29:52,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:29:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:29:52,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:52,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:29:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:29:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:29:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:53,233 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:29:53,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:53,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:53,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:53,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:53,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:29:53,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:53,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:29:53,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572391923] [2020-10-14 09:29:53,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:53,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:29:53,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252653896] [2020-10-14 09:29:53,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:29:53,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:53,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:29:53,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:53,268 INFO L87 Difference]: Start difference. First operand 6101 states and 8816 transitions. Second operand 4 states. [2020-10-14 09:29:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:55,578 INFO L93 Difference]: Finished difference Result 18097 states and 26170 transitions. [2020-10-14 09:29:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:29:55,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-14 09:29:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:55,613 INFO L225 Difference]: With dead ends: 18097 [2020-10-14 09:29:55,613 INFO L226 Difference]: Without dead ends: 12155 [2020-10-14 09:29:55,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2020-10-14 09:29:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 6113. [2020-10-14 09:29:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6113 states. [2020-10-14 09:29:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6113 states to 6113 states and 8832 transitions. [2020-10-14 09:29:56,032 INFO L78 Accepts]: Start accepts. Automaton has 6113 states and 8832 transitions. Word has length 157 [2020-10-14 09:29:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:56,032 INFO L479 AbstractCegarLoop]: Abstraction has 6113 states and 8832 transitions. [2020-10-14 09:29:56,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:29:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6113 states and 8832 transitions. [2020-10-14 09:29:56,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 09:29:56,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:56,042 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] [2020-10-14 09:29:56,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:29:56,043 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:56,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:56,043 INFO L82 PathProgramCache]: Analyzing trace with hash 108020394, now seen corresponding path program 1 times [2020-10-14 09:29:56,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:56,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978598492] [2020-10-14 09:29:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:56,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:56,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:01,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:01,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 09:30:01,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:30:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:30:01,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:01,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:30:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:30:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 09:30:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:01,418 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:30:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:01,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:01,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:01,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:01,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:30:01,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:01,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:01,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978598492] [2020-10-14 09:30:01,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:01,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:30:01,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175785526] [2020-10-14 09:30:01,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:30:01,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:01,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:30:01,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:30:01,485 INFO L87 Difference]: Start difference. First operand 6113 states and 8832 transitions. Second operand 5 states. [2020-10-14 09:30:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:04,736 INFO L93 Difference]: Finished difference Result 17533 states and 25276 transitions. [2020-10-14 09:30:04,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:04,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 09:30:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:04,762 INFO L225 Difference]: With dead ends: 17533 [2020-10-14 09:30:04,762 INFO L226 Difference]: Without dead ends: 11755 [2020-10-14 09:30:04,776 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 [2020-10-14 09:30:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11755 states. [2020-10-14 09:30:05,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11755 to 11701. [2020-10-14 09:30:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11701 states. [2020-10-14 09:30:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11701 states to 11701 states and 16692 transitions. [2020-10-14 09:30:05,493 INFO L78 Accepts]: Start accepts. Automaton has 11701 states and 16692 transitions. Word has length 158 [2020-10-14 09:30:05,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:05,493 INFO L479 AbstractCegarLoop]: Abstraction has 11701 states and 16692 transitions. [2020-10-14 09:30:05,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:30:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 11701 states and 16692 transitions. [2020-10-14 09:30:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 09:30:05,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:05,506 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] [2020-10-14 09:30:05,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:30:05,507 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:05,507 INFO L82 PathProgramCache]: Analyzing trace with hash 697573840, now seen corresponding path program 1 times [2020-10-14 09:30:05,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:05,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258729182] [2020-10-14 09:30:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:05,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:05,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:05,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:10,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:10,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 09:30:10,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:30:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:30:10,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:10,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:30:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:30:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:30:10,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:10,865 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:30:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:10,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:10,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:10,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:10,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:30:10,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:10,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:10,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258729182] [2020-10-14 09:30:10,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:10,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:30:10,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019828342] [2020-10-14 09:30:10,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:30:10,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:10,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:30:10,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:30:10,908 INFO L87 Difference]: Start difference. First operand 11701 states and 16692 transitions. Second operand 5 states. [2020-10-14 09:30:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:13,233 INFO L93 Difference]: Finished difference Result 23356 states and 33320 transitions. [2020-10-14 09:30:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:13,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 09:30:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:13,254 INFO L225 Difference]: With dead ends: 23356 [2020-10-14 09:30:13,255 INFO L226 Difference]: Without dead ends: 11696 [2020-10-14 09:30:13,274 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 [2020-10-14 09:30:13,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11696 states. [2020-10-14 09:30:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11696 to 11696. [2020-10-14 09:30:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11696 states. [2020-10-14 09:30:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11696 states to 11696 states and 16683 transitions. [2020-10-14 09:30:13,974 INFO L78 Accepts]: Start accepts. Automaton has 11696 states and 16683 transitions. Word has length 158 [2020-10-14 09:30:13,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:13,975 INFO L479 AbstractCegarLoop]: Abstraction has 11696 states and 16683 transitions. [2020-10-14 09:30:13,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:30:13,975 INFO L276 IsEmpty]: Start isEmpty. Operand 11696 states and 16683 transitions. [2020-10-14 09:30:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 09:30:13,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:13,986 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] [2020-10-14 09:30:13,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:30:13,987 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:13,987 INFO L82 PathProgramCache]: Analyzing trace with hash -435580666, now seen corresponding path program 1 times [2020-10-14 09:30:13,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:13,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535887305] [2020-10-14 09:30:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:14,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:19,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 09:30:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:30:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:30:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:19,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:30:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:30:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 09:30:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:19,456 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:30:19,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:19,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:19,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:19,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:19,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:30:19,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:19,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:19,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:19,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535887305] [2020-10-14 09:30:19,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:19,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:30:19,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196461514] [2020-10-14 09:30:19,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:30:19,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:19,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:30:19,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:30:19,540 INFO L87 Difference]: Start difference. First operand 11696 states and 16683 transitions. Second operand 5 states. [2020-10-14 09:30:22,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:22,528 INFO L93 Difference]: Finished difference Result 26148 states and 37312 transitions. [2020-10-14 09:30:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:22,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 09:30:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:22,547 INFO L225 Difference]: With dead ends: 26148 [2020-10-14 09:30:22,547 INFO L226 Difference]: Without dead ends: 14962 [2020-10-14 09:30:22,565 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 [2020-10-14 09:30:22,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14962 states. [2020-10-14 09:30:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14962 to 14914. [2020-10-14 09:30:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14914 states. [2020-10-14 09:30:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14914 states to 14914 states and 20927 transitions. [2020-10-14 09:30:23,429 INFO L78 Accepts]: Start accepts. Automaton has 14914 states and 20927 transitions. Word has length 158 [2020-10-14 09:30:23,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:23,429 INFO L479 AbstractCegarLoop]: Abstraction has 14914 states and 20927 transitions. [2020-10-14 09:30:23,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:30:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 14914 states and 20927 transitions. [2020-10-14 09:30:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 09:30:23,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:23,440 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] [2020-10-14 09:30:23,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:30:23,441 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:23,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 813942245, now seen corresponding path program 1 times [2020-10-14 09:30:23,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:23,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371419893] [2020-10-14 09:30:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:28,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 09:30:28,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:30:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:30:28,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:28,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:30:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 09:30:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:28,750 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:30:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:28,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:28,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:28,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:28,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:30:28,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:28,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:28,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:28,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:28,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:28,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371419893] [2020-10-14 09:30:28,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:28,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:28,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571926917] [2020-10-14 09:30:28,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:28,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:28,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:28,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:28,794 INFO L87 Difference]: Start difference. First operand 14914 states and 20927 transitions. Second operand 4 states. [2020-10-14 09:30:32,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:32,354 INFO L93 Difference]: Finished difference Result 36800 states and 52703 transitions. [2020-10-14 09:30:32,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:30:32,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-14 09:30:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:32,381 INFO L225 Difference]: With dead ends: 36800 [2020-10-14 09:30:32,381 INFO L226 Difference]: Without dead ends: 22904 [2020-10-14 09:30:32,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22904 states. [2020-10-14 09:30:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22904 to 19566. [2020-10-14 09:30:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19566 states. [2020-10-14 09:30:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19566 states to 19566 states and 28263 transitions. [2020-10-14 09:30:33,672 INFO L78 Accepts]: Start accepts. Automaton has 19566 states and 28263 transitions. Word has length 162 [2020-10-14 09:30:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:33,672 INFO L479 AbstractCegarLoop]: Abstraction has 19566 states and 28263 transitions. [2020-10-14 09:30:33,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:30:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 19566 states and 28263 transitions. [2020-10-14 09:30:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 09:30:33,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:33,684 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] [2020-10-14 09:30:33,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:30:33,684 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:33,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1774778344, now seen corresponding path program 1 times [2020-10-14 09:30:33,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:33,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142112987] [2020-10-14 09:30:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:33,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:33,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:38,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 09:30:38,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:30:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:30:38,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:38,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:30:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:30:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:30:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:39,025 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:30:39,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:39,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:39,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:39,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:39,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:30:39,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:39,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:39,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142112987] [2020-10-14 09:30:39,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:39,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:30:39,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624094437] [2020-10-14 09:30:39,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:30:39,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:39,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:30:39,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:30:39,070 INFO L87 Difference]: Start difference. First operand 19566 states and 28263 transitions. Second operand 5 states. [2020-10-14 09:30:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:41,676 INFO L93 Difference]: Finished difference Result 32473 states and 46949 transitions. [2020-10-14 09:30:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:41,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 09:30:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:41,697 INFO L225 Difference]: With dead ends: 32473 [2020-10-14 09:30:41,698 INFO L226 Difference]: Without dead ends: 17414 [2020-10-14 09:30:41,715 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 [2020-10-14 09:30:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17414 states. [2020-10-14 09:30:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17414 to 17414. [2020-10-14 09:30:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17414 states. [2020-10-14 09:30:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17414 states to 17414 states and 25156 transitions. [2020-10-14 09:30:42,805 INFO L78 Accepts]: Start accepts. Automaton has 17414 states and 25156 transitions. Word has length 165 [2020-10-14 09:30:42,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:42,805 INFO L479 AbstractCegarLoop]: Abstraction has 17414 states and 25156 transitions. [2020-10-14 09:30:42,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:30:42,806 INFO L276 IsEmpty]: Start isEmpty. Operand 17414 states and 25156 transitions. [2020-10-14 09:30:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 09:30:42,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:42,815 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] [2020-10-14 09:30:42,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:30:42,815 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:42,816 INFO L82 PathProgramCache]: Analyzing trace with hash 673351517, now seen corresponding path program 1 times [2020-10-14 09:30:42,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:42,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025929034] [2020-10-14 09:30:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:43,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:47,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:47,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 09:30:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:30:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:30:47,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:47,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:30:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:30:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:48,129 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:30:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:48,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:48,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:48,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:48,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:30:48,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:48,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:48,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025929034] [2020-10-14 09:30:48,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:48,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:48,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799443214] [2020-10-14 09:30:48,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:48,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:48,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:48,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:48,168 INFO L87 Difference]: Start difference. First operand 17414 states and 25156 transitions. Second operand 4 states. [2020-10-14 09:30:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:52,021 INFO L93 Difference]: Finished difference Result 43884 states and 64565 transitions. [2020-10-14 09:30:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:30:52,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-14 09:30:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:52,065 INFO L225 Difference]: With dead ends: 43884 [2020-10-14 09:30:52,065 INFO L226 Difference]: Without dead ends: 27654 [2020-10-14 09:30:52,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27654 states. [2020-10-14 09:30:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27654 to 24798. [2020-10-14 09:30:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24798 states. [2020-10-14 09:30:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24798 states to 24798 states and 36842 transitions. [2020-10-14 09:30:53,679 INFO L78 Accepts]: Start accepts. Automaton has 24798 states and 36842 transitions. Word has length 167 [2020-10-14 09:30:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:53,679 INFO L479 AbstractCegarLoop]: Abstraction has 24798 states and 36842 transitions. [2020-10-14 09:30:53,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:30:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 24798 states and 36842 transitions. [2020-10-14 09:30:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 09:30:53,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:53,690 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] [2020-10-14 09:30:53,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:30:53,690 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash -2030118577, now seen corresponding path program 1 times [2020-10-14 09:30:53,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:53,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191812556] [2020-10-14 09:30:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:53,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:58,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:58,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 09:30:58,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:30:58,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 09:30:58,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:58,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:30:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:30:58,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:59,019 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:30:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:59,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:59,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:59,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:30:59,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:59,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:59,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191812556] [2020-10-14 09:30:59,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:59,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:59,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736894049] [2020-10-14 09:30:59,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:59,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:59,057 INFO L87 Difference]: Start difference. First operand 24798 states and 36842 transitions. Second operand 4 states. [2020-10-14 09:31:04,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:04,070 INFO L93 Difference]: Finished difference Result 58411 states and 87874 transitions. [2020-10-14 09:31:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:31:04,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-14 09:31:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:04,118 INFO L225 Difference]: With dead ends: 58411 [2020-10-14 09:31:04,118 INFO L226 Difference]: Without dead ends: 38728 [2020-10-14 09:31:04,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:31:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38728 states. [2020-10-14 09:31:06,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38728 to 35698. [2020-10-14 09:31:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35698 states. [2020-10-14 09:31:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35698 states to 35698 states and 54008 transitions. [2020-10-14 09:31:06,331 INFO L78 Accepts]: Start accepts. Automaton has 35698 states and 54008 transitions. Word has length 168 [2020-10-14 09:31:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:06,332 INFO L479 AbstractCegarLoop]: Abstraction has 35698 states and 54008 transitions. [2020-10-14 09:31:06,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:31:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 35698 states and 54008 transitions. [2020-10-14 09:31:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 09:31:06,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:06,340 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] [2020-10-14 09:31:06,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:31:06,341 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:06,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:06,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1773439178, now seen corresponding path program 1 times [2020-10-14 09:31:06,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:06,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432318195] [2020-10-14 09:31:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:09,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:11,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:11,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 09:31:11,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:31:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:31:11,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:11,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:31:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:31:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 09:31:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:11,720 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:31:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:11,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:31:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:11,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432318195] [2020-10-14 09:31:11,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:11,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:31:11,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575671874] [2020-10-14 09:31:11,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:31:11,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:11,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:31:11,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:31:11,810 INFO L87 Difference]: Start difference. First operand 35698 states and 54008 transitions. Second operand 5 states. [2020-10-14 09:31:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:19,341 INFO L93 Difference]: Finished difference Result 92907 states and 140397 transitions. [2020-10-14 09:31:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:31:19,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 09:31:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:19,419 INFO L225 Difference]: With dead ends: 92907 [2020-10-14 09:31:19,419 INFO L226 Difference]: Without dead ends: 58393 [2020-10-14 09:31:19,450 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 [2020-10-14 09:31:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58393 states. [2020-10-14 09:31:25,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58393 to 58341. [2020-10-14 09:31:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58341 states. [2020-10-14 09:31:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58341 states to 58341 states and 86869 transitions. [2020-10-14 09:31:25,420 INFO L78 Accepts]: Start accepts. Automaton has 58341 states and 86869 transitions. Word has length 170 [2020-10-14 09:31:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:25,420 INFO L479 AbstractCegarLoop]: Abstraction has 58341 states and 86869 transitions. [2020-10-14 09:31:25,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:31:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 58341 states and 86869 transitions. [2020-10-14 09:31:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 09:31:25,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:25,433 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] [2020-10-14 09:31:25,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:31:25,433 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:25,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:25,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1003020056, now seen corresponding path program 1 times [2020-10-14 09:31:25,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:25,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713572756] [2020-10-14 09:31:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:30,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:30,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 09:31:30,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:31:30,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:31:30,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:30,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:31:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:31:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:31:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:30,745 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:31:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:30,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:30,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:30,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:30,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:31:30,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:30,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:31:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:31:30,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:30,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713572756] [2020-10-14 09:31:30,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:30,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:31:30,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446249677] [2020-10-14 09:31:30,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:31:30,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:30,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:31:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:31:30,788 INFO L87 Difference]: Start difference. First operand 58341 states and 86869 transitions. Second operand 5 states. [2020-10-14 09:31:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:35,808 INFO L93 Difference]: Finished difference Result 105616 states and 157389 transitions. [2020-10-14 09:31:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:31:35,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 09:31:35,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:36,160 INFO L225 Difference]: With dead ends: 105616 [2020-10-14 09:31:36,161 INFO L226 Difference]: Without dead ends: 47367 [2020-10-14 09:31:36,196 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 [2020-10-14 09:31:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47367 states. [2020-10-14 09:31:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47367 to 47367. [2020-10-14 09:31:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47367 states. [2020-10-14 09:31:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47367 states to 47367 states and 70648 transitions. [2020-10-14 09:31:39,701 INFO L78 Accepts]: Start accepts. Automaton has 47367 states and 70648 transitions. Word has length 170 [2020-10-14 09:31:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:39,701 INFO L479 AbstractCegarLoop]: Abstraction has 47367 states and 70648 transitions. [2020-10-14 09:31:39,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:31:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 47367 states and 70648 transitions. [2020-10-14 09:31:39,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:31:39,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:39,710 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, 1, 1, 1, 1, 1, 1] [2020-10-14 09:31:39,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:31:39,710 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:39,711 INFO L82 PathProgramCache]: Analyzing trace with hash -2138120146, now seen corresponding path program 1 times [2020-10-14 09:31:39,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:39,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467588417] [2020-10-14 09:31:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:39,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:39,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:40,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:44,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:44,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:31:44,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:31:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:31:44,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:44,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:31:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:31:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 09:31:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:45,035 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:31:45,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:45,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:45,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:45,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:45,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:31:45,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:45,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:31:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:31:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:45,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467588417] [2020-10-14 09:31:45,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:45,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:31:45,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326842710] [2020-10-14 09:31:45,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:31:45,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:31:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:31:45,091 INFO L87 Difference]: Start difference. First operand 47367 states and 70648 transitions. Second operand 6 states. [2020-10-14 09:31:45,392 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-14 09:31:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:51,189 INFO L93 Difference]: Finished difference Result 93490 states and 139876 transitions. [2020-10-14 09:31:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:31:51,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-10-14 09:31:51,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:51,246 INFO L225 Difference]: With dead ends: 93490 [2020-10-14 09:31:51,246 INFO L226 Difference]: Without dead ends: 47367 [2020-10-14 09:31:51,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:31:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47367 states. [2020-10-14 09:31:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47367 to 47367. [2020-10-14 09:31:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47367 states. [2020-10-14 09:31:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47367 states to 47367 states and 70037 transitions. [2020-10-14 09:31:54,957 INFO L78 Accepts]: Start accepts. Automaton has 47367 states and 70037 transitions. Word has length 177 [2020-10-14 09:31:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:54,957 INFO L479 AbstractCegarLoop]: Abstraction has 47367 states and 70037 transitions. [2020-10-14 09:31:54,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:31:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 47367 states and 70037 transitions. [2020-10-14 09:31:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:31:54,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:54,967 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, 1, 1, 1, 1, 1, 1] [2020-10-14 09:31:54,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:31:54,967 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:54,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:54,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2022557267, now seen corresponding path program 1 times [2020-10-14 09:31:54,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:54,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101821315] [2020-10-14 09:31:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:55,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:55,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:00,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:00,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:32:00,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:32:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:32:00,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:00,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:32:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 09:32:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 09:32:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:00,302 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:32:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:00,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:00,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:00,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:00,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:32:00,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:00,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:00,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:00,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:32:00,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101821315] [2020-10-14 09:32:00,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:00,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:32:00,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980480461] [2020-10-14 09:32:00,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:32:00,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:32:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:32:00,354 INFO L87 Difference]: Start difference. First operand 47367 states and 70037 transitions. Second operand 5 states. [2020-10-14 09:32:00,625 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-14 09:32:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:12,690 INFO L93 Difference]: Finished difference Result 168152 states and 253887 transitions. [2020-10-14 09:32:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:32:12,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-14 09:32:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:13,016 INFO L225 Difference]: With dead ends: 168152 [2020-10-14 09:32:13,017 INFO L226 Difference]: Without dead ends: 130083 [2020-10-14 09:32:13,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:32:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130083 states. [2020-10-14 09:32:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130083 to 129971. [2020-10-14 09:32:24,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129971 states. [2020-10-14 09:32:25,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129971 states to 129971 states and 194355 transitions. [2020-10-14 09:32:25,185 INFO L78 Accepts]: Start accepts. Automaton has 129971 states and 194355 transitions. Word has length 177 [2020-10-14 09:32:25,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:25,186 INFO L479 AbstractCegarLoop]: Abstraction has 129971 states and 194355 transitions. [2020-10-14 09:32:25,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:32:25,186 INFO L276 IsEmpty]: Start isEmpty. Operand 129971 states and 194355 transitions. [2020-10-14 09:32:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:32:25,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:25,206 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, 1, 1, 1, 1, 1, 1] [2020-10-14 09:32:25,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:32:25,207 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash -461914414, now seen corresponding path program 1 times [2020-10-14 09:32:25,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:25,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386727354] [2020-10-14 09:32:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:25,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:30,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:30,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:32:30,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:32:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:32:30,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:30,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:32:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 09:32:30,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 09:32:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:30,540 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:32:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:30,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:30,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:30,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:30,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:32:30,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:30,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:32:30,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386727354] [2020-10-14 09:32:30,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:30,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:32:30,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741432605] [2020-10-14 09:32:30,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:32:30,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:30,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:32:30,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:32:30,583 INFO L87 Difference]: Start difference. First operand 129971 states and 194355 transitions. Second operand 5 states. [2020-10-14 09:32:30,861 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 203