/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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:40:51,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:40:51,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:40:51,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:40:51,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:40:51,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:40:51,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:40:51,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:40:51,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:40:51,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:40:51,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:40:51,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:40:51,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:40:51,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:40:51,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:40:51,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:40:51,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:40:51,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:40:51,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:40:51,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:40:51,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:40:51,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:40:51,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:40:51,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:40:51,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:40:51,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:40:51,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:40:51,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:40:51,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:40:51,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:40:51,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:40:51,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:40:51,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:40:51,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:40:51,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:40:51,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:40:51,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:40:51,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:40:51,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:40:51,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:40:51,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:40:51,519 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 08:40:51,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:40:51,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:40:51,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:40:51,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:40:51,561 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:40:51,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:40:51,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:40:51,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:40:51,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:40:51,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:40:51,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:40:51,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:40:51,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:40:51,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:40:51,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:40:51,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:40:51,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:40:51,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:40:51,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:40:51,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:40:51,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:40:51,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:40:51,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:40:51,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:40:51,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:40:51,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:40:51,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:40:51,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:40:51,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:40:51,567 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 08:40:51,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:40:51,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:40:51,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:40:51,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:40:51,920 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:40:51,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 08:40:51,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f269613/341bf55aa83a4960b9c68ae59dc1ae1b/FLAG4141d3d80 [2020-10-14 08:40:52,540 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:40:52,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 08:40:52,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f269613/341bf55aa83a4960b9c68ae59dc1ae1b/FLAG4141d3d80 [2020-10-14 08:40:52,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f269613/341bf55aa83a4960b9c68ae59dc1ae1b [2020-10-14 08:40:52,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:40:52,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:40:52,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:40:52,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:40:52,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:40:52,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:40:52" (1/1) ... [2020-10-14 08:40:52,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd7a508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:52, skipping insertion in model container [2020-10-14 08:40:52,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:40:52" (1/1) ... [2020-10-14 08:40:52,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:40:52,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:40:53,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:40:53,478 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:40:53,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:40:53,658 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:40:53,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53 WrapperNode [2020-10-14 08:40:53,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:40:53,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:40:53,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:40:53,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:40:53,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (1/1) ... [2020-10-14 08:40:53,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (1/1) ... [2020-10-14 08:40:53,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (1/1) ... [2020-10-14 08:40:53,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (1/1) ... [2020-10-14 08:40:53,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (1/1) ... [2020-10-14 08:40:53,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (1/1) ... [2020-10-14 08:40:53,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (1/1) ... [2020-10-14 08:40:53,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:40:53,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:40:53,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:40:53,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:40:53,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (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 08:40:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:40:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:40:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:40:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:40:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:40:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:40:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:40:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:40:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:40:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:40:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:40:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:40:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:40:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:40:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:40:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:40:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:40:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:40:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:40:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:40:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:40:55,130 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:40:55,130 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:40:55,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:40:55 BoogieIcfgContainer [2020-10-14 08:40:55,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:40:55,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:40:55,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:40:55,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:40:55,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:40:52" (1/3) ... [2020-10-14 08:40:55,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81d1b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:40:55, skipping insertion in model container [2020-10-14 08:40:55,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:53" (2/3) ... [2020-10-14 08:40:55,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81d1b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:40:55, skipping insertion in model container [2020-10-14 08:40:55,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:40:55" (3/3) ... [2020-10-14 08:40:55,145 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 08:40:55,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:40:55,164 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 08:40:55,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 08:40:55,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:40:55,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:40:55,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:40:55,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:40:55,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:40:55,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:40:55,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:40:55,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:40:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states. [2020-10-14 08:40:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:40:55,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:55,248 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] [2020-10-14 08:40:55,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:55,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:55,255 INFO L82 PathProgramCache]: Analyzing trace with hash -961922544, now seen corresponding path program 1 times [2020-10-14 08:40:55,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:55,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635450553] [2020-10-14 08:40:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:00,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:41:00,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:41:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:41:00,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:00,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:41:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:41:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:41:00,839 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:00,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:00,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 08:41:00,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:00,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:00,900 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 08:41:00,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635450553] [2020-10-14 08:41:00,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:00,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:41:00,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993520181] [2020-10-14 08:41:00,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:41:00,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:00,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:41:00,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:41:00,931 INFO L87 Difference]: Start difference. First operand 271 states. Second operand 6 states. [2020-10-14 08:41:01,225 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:41:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:02,446 INFO L93 Difference]: Finished difference Result 383 states and 650 transitions. [2020-10-14 08:41:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:41:02,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 08:41:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:02,465 INFO L225 Difference]: With dead ends: 383 [2020-10-14 08:41:02,466 INFO L226 Difference]: Without dead ends: 235 [2020-10-14 08:41:02,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-14 08:41:02,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2020-10-14 08:41:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-14 08:41:02,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 292 transitions. [2020-10-14 08:41:02,537 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 292 transitions. Word has length 51 [2020-10-14 08:41:02,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:02,538 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 292 transitions. [2020-10-14 08:41:02,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:41:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 292 transitions. [2020-10-14 08:41:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:41:02,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:02,541 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] [2020-10-14 08:41:02,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:41:02,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:02,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:02,543 INFO L82 PathProgramCache]: Analyzing trace with hash -317393183, now seen corresponding path program 1 times [2020-10-14 08:41:02,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:02,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849199442] [2020-10-14 08:41:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:03,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:05,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:06,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:07,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:07,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:41:07,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:41:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:41:07,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:07,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:41:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 08:41:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:41:07,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:07,785 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:07,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:07,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:07,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:07,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:41:07,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:07,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:07,823 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 08:41:07,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849199442] [2020-10-14 08:41:07,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:07,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:41:07,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697153329] [2020-10-14 08:41:07,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:41:07,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:07,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:41:07,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:41:07,828 INFO L87 Difference]: Start difference. First operand 235 states and 292 transitions. Second operand 6 states. [2020-10-14 08:41:08,025 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:41:08,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:08,973 INFO L93 Difference]: Finished difference Result 499 states and 646 transitions. [2020-10-14 08:41:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:41:08,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 08:41:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:08,978 INFO L225 Difference]: With dead ends: 499 [2020-10-14 08:41:08,978 INFO L226 Difference]: Without dead ends: 449 [2020-10-14 08:41:08,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-14 08:41:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 392. [2020-10-14 08:41:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-14 08:41:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 525 transitions. [2020-10-14 08:41:09,016 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 525 transitions. Word has length 51 [2020-10-14 08:41:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:09,016 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 525 transitions. [2020-10-14 08:41:09,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:41:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 525 transitions. [2020-10-14 08:41:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:41:09,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:09,019 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] [2020-10-14 08:41:09,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:41:09,019 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:09,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1036065780, now seen corresponding path program 1 times [2020-10-14 08:41:09,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:09,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470128964] [2020-10-14 08:41:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:09,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:41:14,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:41:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:41:14,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:14,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:41:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:41:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:41:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:14,245 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:14,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:14,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:41:14,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:14,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:14,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:14,269 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 08:41:14,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470128964] [2020-10-14 08:41:14,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:14,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:41:14,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942548219] [2020-10-14 08:41:14,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:41:14,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:14,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:41:14,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:41:14,272 INFO L87 Difference]: Start difference. First operand 392 states and 525 transitions. Second operand 6 states. [2020-10-14 08:41:14,416 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:41:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:15,722 INFO L93 Difference]: Finished difference Result 1395 states and 2001 transitions. [2020-10-14 08:41:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:41:15,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 08:41:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:15,732 INFO L225 Difference]: With dead ends: 1395 [2020-10-14 08:41:15,732 INFO L226 Difference]: Without dead ends: 1218 [2020-10-14 08:41:15,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-10-14 08:41:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 990. [2020-10-14 08:41:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-14 08:41:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1418 transitions. [2020-10-14 08:41:15,816 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1418 transitions. Word has length 51 [2020-10-14 08:41:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:15,817 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1418 transitions. [2020-10-14 08:41:15,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:41:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1418 transitions. [2020-10-14 08:41:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:41:15,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:15,821 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] [2020-10-14 08:41:15,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:41:15,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:15,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1881396970, now seen corresponding path program 1 times [2020-10-14 08:41:15,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:15,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039082929] [2020-10-14 08:41:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:18,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:19,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:41:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:41:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:41:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:20,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:41:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:41:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:41:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:20,999 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:21,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:21,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:21,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:41:21,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:21,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:21,024 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 08:41:21,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039082929] [2020-10-14 08:41:21,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:21,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:41:21,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704224272] [2020-10-14 08:41:21,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:41:21,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:21,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:41:21,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:41:21,027 INFO L87 Difference]: Start difference. First operand 990 states and 1418 transitions. Second operand 6 states. [2020-10-14 08:41:21,183 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:41:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:22,480 INFO L93 Difference]: Finished difference Result 1713 states and 2493 transitions. [2020-10-14 08:41:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:41:22,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 08:41:22,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:22,492 INFO L225 Difference]: With dead ends: 1713 [2020-10-14 08:41:22,492 INFO L226 Difference]: Without dead ends: 1370 [2020-10-14 08:41:22,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2020-10-14 08:41:22,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 981. [2020-10-14 08:41:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-10-14 08:41:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1404 transitions. [2020-10-14 08:41:22,590 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1404 transitions. Word has length 51 [2020-10-14 08:41:22,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:22,593 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 1404 transitions. [2020-10-14 08:41:22,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:41:22,593 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1404 transitions. [2020-10-14 08:41:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:41:22,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:22,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:41:22,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:41:22,599 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:22,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:22,600 INFO L82 PathProgramCache]: Analyzing trace with hash 67692272, now seen corresponding path program 1 times [2020-10-14 08:41:22,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:22,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229831416] [2020-10-14 08:41:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:22,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:22,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:26,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:26,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:26,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:27,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:27,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:41:27,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:41:27,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:41:27,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:27,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:41:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 08:41:27,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:27,865 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:27,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:27,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:27,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:41:27,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:27,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:27,910 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 08:41:27,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229831416] [2020-10-14 08:41:27,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:27,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:27,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696947742] [2020-10-14 08:41:27,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:41:27,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:27,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:41:27,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:27,914 INFO L87 Difference]: Start difference. First operand 981 states and 1404 transitions. Second operand 10 states. [2020-10-14 08:41:28,109 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:41:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:29,477 INFO L93 Difference]: Finished difference Result 1374 states and 1975 transitions. [2020-10-14 08:41:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:41:29,477 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-14 08:41:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:29,487 INFO L225 Difference]: With dead ends: 1374 [2020-10-14 08:41:29,488 INFO L226 Difference]: Without dead ends: 917 [2020-10-14 08:41:29,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:41:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-10-14 08:41:29,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 545. [2020-10-14 08:41:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-10-14 08:41:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 768 transitions. [2020-10-14 08:41:29,537 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 768 transitions. Word has length 52 [2020-10-14 08:41:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:29,538 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 768 transitions. [2020-10-14 08:41:29,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:41:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 768 transitions. [2020-10-14 08:41:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:41:29,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:29,539 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] [2020-10-14 08:41:29,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:41:29,540 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:29,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:29,540 INFO L82 PathProgramCache]: Analyzing trace with hash -377020472, now seen corresponding path program 1 times [2020-10-14 08:41:29,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:29,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325551340] [2020-10-14 08:41:29,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:29,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:30,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:30,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:33,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:34,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:34,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:41:34,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:41:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:41:34,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:34,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:41:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 08:41:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:34,796 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:34,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:41:34,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:34,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:34,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:34,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:34,850 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 08:41:34,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325551340] [2020-10-14 08:41:34,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:34,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:34,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383601942] [2020-10-14 08:41:34,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:41:34,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:34,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:41:34,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:34,853 INFO L87 Difference]: Start difference. First operand 545 states and 768 transitions. Second operand 10 states. [2020-10-14 08:41:35,052 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:41:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:36,245 INFO L93 Difference]: Finished difference Result 938 states and 1346 transitions. [2020-10-14 08:41:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:41:36,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-14 08:41:36,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:36,249 INFO L225 Difference]: With dead ends: 938 [2020-10-14 08:41:36,249 INFO L226 Difference]: Without dead ends: 539 [2020-10-14 08:41:36,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:41:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-10-14 08:41:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 335. [2020-10-14 08:41:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-14 08:41:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 456 transitions. [2020-10-14 08:41:36,278 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 456 transitions. Word has length 52 [2020-10-14 08:41:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:36,278 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 456 transitions. [2020-10-14 08:41:36,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:41:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 456 transitions. [2020-10-14 08:41:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:41:36,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:36,280 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] [2020-10-14 08:41:36,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:41:36,280 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:36,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:36,284 INFO L82 PathProgramCache]: Analyzing trace with hash 505447072, now seen corresponding path program 1 times [2020-10-14 08:41:36,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:36,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939689966] [2020-10-14 08:41:36,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:36,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:38,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:38,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:41,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:41:41,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:41:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:41:41,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:41,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 08:41:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:41,596 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:41,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:41,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:41,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:41,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:41,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:41:41,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:41,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:41,628 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 08:41:41,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939689966] [2020-10-14 08:41:41,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:41,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:41,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878504906] [2020-10-14 08:41:41,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:41,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:41,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:41,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:41,632 INFO L87 Difference]: Start difference. First operand 335 states and 456 transitions. Second operand 9 states. [2020-10-14 08:41:41,806 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:42,562 INFO L93 Difference]: Finished difference Result 353 states and 470 transitions. [2020-10-14 08:41:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:41:42,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-14 08:41:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:42,565 INFO L225 Difference]: With dead ends: 353 [2020-10-14 08:41:42,566 INFO L226 Difference]: Without dead ends: 349 [2020-10-14 08:41:42,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:41:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-14 08:41:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 331. [2020-10-14 08:41:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-14 08:41:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 452 transitions. [2020-10-14 08:41:42,588 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 452 transitions. Word has length 52 [2020-10-14 08:41:42,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:42,589 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 452 transitions. [2020-10-14 08:41:42,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 452 transitions. [2020-10-14 08:41:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:41:42,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:42,590 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] [2020-10-14 08:41:42,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:41:42,591 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:42,591 INFO L82 PathProgramCache]: Analyzing trace with hash 791284277, now seen corresponding path program 1 times [2020-10-14 08:41:42,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:42,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628010842] [2020-10-14 08:41:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:43,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:43,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:47,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:47,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:41:47,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:41:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:41:47,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:47,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 08:41:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:47,849 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:47,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:47,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:47,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:41:47,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:47,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:47,876 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 08:41:47,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628010842] [2020-10-14 08:41:47,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:47,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:47,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262996834] [2020-10-14 08:41:47,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:47,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:47,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:47,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:47,878 INFO L87 Difference]: Start difference. First operand 331 states and 452 transitions. Second operand 9 states. [2020-10-14 08:41:48,063 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:41:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:49,861 INFO L93 Difference]: Finished difference Result 2104 states and 3110 transitions. [2020-10-14 08:41:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 08:41:49,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-14 08:41:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:49,871 INFO L225 Difference]: With dead ends: 2104 [2020-10-14 08:41:49,871 INFO L226 Difference]: Without dead ends: 1916 [2020-10-14 08:41:49,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:41:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2020-10-14 08:41:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 510. [2020-10-14 08:41:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-14 08:41:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 722 transitions. [2020-10-14 08:41:49,937 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 722 transitions. Word has length 53 [2020-10-14 08:41:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:49,937 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 722 transitions. [2020-10-14 08:41:49,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 722 transitions. [2020-10-14 08:41:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:41:49,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:49,938 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] [2020-10-14 08:41:49,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:41:49,939 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:49,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1306538019, now seen corresponding path program 1 times [2020-10-14 08:41:49,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:49,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954447311] [2020-10-14 08:41:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:50,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:50,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:52,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:54,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:41:54,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:41:54,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:41:54,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:54,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:41:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:41:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:55,149 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:55,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:55,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:55,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:55,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:55,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:41:55,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:55,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:55,178 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 08:41:55,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954447311] [2020-10-14 08:41:55,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:55,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:41:55,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118326865] [2020-10-14 08:41:55,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:41:55,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:55,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:41:55,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:41:55,180 INFO L87 Difference]: Start difference. First operand 510 states and 722 transitions. Second operand 8 states. [2020-10-14 08:41:55,374 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:41:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:56,094 INFO L93 Difference]: Finished difference Result 547 states and 754 transitions. [2020-10-14 08:41:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:41:56,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-14 08:41:56,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:56,097 INFO L225 Difference]: With dead ends: 547 [2020-10-14 08:41:56,097 INFO L226 Difference]: Without dead ends: 540 [2020-10-14 08:41:56,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:41:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-14 08:41:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 510. [2020-10-14 08:41:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-14 08:41:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 721 transitions. [2020-10-14 08:41:56,141 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 721 transitions. Word has length 53 [2020-10-14 08:41:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:56,142 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 721 transitions. [2020-10-14 08:41:56,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:41:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 721 transitions. [2020-10-14 08:41:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:41:56,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:56,143 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] [2020-10-14 08:41:56,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:41:56,143 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:56,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:56,143 INFO L82 PathProgramCache]: Analyzing trace with hash -649279837, now seen corresponding path program 1 times [2020-10-14 08:41:56,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:56,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853124979] [2020-10-14 08:41:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:57,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:57,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:41:57,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:41:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-10-14 08:41:57,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:57,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:41:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:58,147 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:58,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:58,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:58,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:58,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:58,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:41:58,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:58,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:58,171 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 08:41:58,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853124979] [2020-10-14 08:41:58,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:58,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:58,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758953104] [2020-10-14 08:41:58,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:58,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:58,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:58,174 INFO L87 Difference]: Start difference. First operand 510 states and 721 transitions. Second operand 9 states. [2020-10-14 08:41:58,339 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:59,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:59,077 INFO L93 Difference]: Finished difference Result 692 states and 991 transitions. [2020-10-14 08:41:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:41:59,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-14 08:41:59,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:59,080 INFO L225 Difference]: With dead ends: 692 [2020-10-14 08:41:59,080 INFO L226 Difference]: Without dead ends: 520 [2020-10-14 08:41:59,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:41:59,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-10-14 08:41:59,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 498. [2020-10-14 08:41:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-14 08:41:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 704 transitions. [2020-10-14 08:41:59,122 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 704 transitions. Word has length 54 [2020-10-14 08:41:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:59,123 INFO L479 AbstractCegarLoop]: Abstraction has 498 states and 704 transitions. [2020-10-14 08:41:59,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 704 transitions. [2020-10-14 08:41:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:41:59,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:59,124 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] [2020-10-14 08:41:59,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:41:59,124 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:59,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:59,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1574640523, now seen corresponding path program 1 times [2020-10-14 08:41:59,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:59,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469562722] [2020-10-14 08:41:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:00,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:00,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:42:00,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:42:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1728 [2020-10-14 08:42:00,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:00,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:42:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:42:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 08:42:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:01,070 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:01,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:01,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:01,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:01,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:01,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:01,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:01,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:01,088 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 08:42:01,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469562722] [2020-10-14 08:42:01,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:01,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:42:01,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778849373] [2020-10-14 08:42:01,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:42:01,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:01,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:42:01,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:01,089 INFO L87 Difference]: Start difference. First operand 498 states and 704 transitions. Second operand 9 states. [2020-10-14 08:42:01,254 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:42:01,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:01,852 INFO L93 Difference]: Finished difference Result 684 states and 979 transitions. [2020-10-14 08:42:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:42:01,853 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-14 08:42:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:01,855 INFO L225 Difference]: With dead ends: 684 [2020-10-14 08:42:01,855 INFO L226 Difference]: Without dead ends: 507 [2020-10-14 08:42:01,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:42:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-14 08:42:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 487. [2020-10-14 08:42:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-14 08:42:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 691 transitions. [2020-10-14 08:42:01,897 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 691 transitions. Word has length 54 [2020-10-14 08:42:01,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:01,897 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 691 transitions. [2020-10-14 08:42:01,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:42:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 691 transitions. [2020-10-14 08:42:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:42:01,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:01,898 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] [2020-10-14 08:42:01,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:42:01,899 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:01,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:01,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1471362170, now seen corresponding path program 1 times [2020-10-14 08:42:01,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:01,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163150312] [2020-10-14 08:42:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:02,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:02,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:42:02,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:42:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-10-14 08:42:02,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:02,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:42:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:42:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:03,119 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:03,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:03,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:42:03,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:03,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:03,144 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 08:42:03,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163150312] [2020-10-14 08:42:03,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:03,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:42:03,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377016289] [2020-10-14 08:42:03,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:42:03,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:03,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:42:03,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:42:03,146 INFO L87 Difference]: Start difference. First operand 487 states and 691 transitions. Second operand 10 states. [2020-10-14 08:42:03,338 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:42:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:04,223 INFO L93 Difference]: Finished difference Result 1037 states and 1510 transitions. [2020-10-14 08:42:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:42:04,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-14 08:42:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:04,227 INFO L225 Difference]: With dead ends: 1037 [2020-10-14 08:42:04,227 INFO L226 Difference]: Without dead ends: 681 [2020-10-14 08:42:04,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:42:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-14 08:42:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 487. [2020-10-14 08:42:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-14 08:42:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 688 transitions. [2020-10-14 08:42:04,273 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 688 transitions. Word has length 55 [2020-10-14 08:42:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:04,274 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 688 transitions. [2020-10-14 08:42:04,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:42:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 688 transitions. [2020-10-14 08:42:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:42:04,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:04,275 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] [2020-10-14 08:42:04,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:42:04,275 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:04,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1027493084, now seen corresponding path program 1 times [2020-10-14 08:42:04,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:04,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246960337] [2020-10-14 08:42:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:04,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:05,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:05,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:42:05,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:42:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1435 [2020-10-14 08:42:05,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:05,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:42:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:42:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:05,931 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:05,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:05,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:05,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:05,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:42:05,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:05,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:05,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:05,958 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 08:42:05,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246960337] [2020-10-14 08:42:05,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:05,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:42:05,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124359303] [2020-10-14 08:42:05,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:42:05,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:05,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:42:05,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:42:05,960 INFO L87 Difference]: Start difference. First operand 487 states and 688 transitions. Second operand 10 states. [2020-10-14 08:42:06,165 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:42:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:07,227 INFO L93 Difference]: Finished difference Result 528 states and 727 transitions. [2020-10-14 08:42:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:42:07,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-14 08:42:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:07,230 INFO L225 Difference]: With dead ends: 528 [2020-10-14 08:42:07,230 INFO L226 Difference]: Without dead ends: 521 [2020-10-14 08:42:07,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-14 08:42:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-10-14 08:42:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 487. [2020-10-14 08:42:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-14 08:42:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 687 transitions. [2020-10-14 08:42:07,275 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 687 transitions. Word has length 55 [2020-10-14 08:42:07,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:07,275 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 687 transitions. [2020-10-14 08:42:07,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:42:07,275 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 687 transitions. [2020-10-14 08:42:07,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:42:07,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:07,276 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] [2020-10-14 08:42:07,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:42:07,276 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:07,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:07,277 INFO L82 PathProgramCache]: Analyzing trace with hash 140367608, now seen corresponding path program 1 times [2020-10-14 08:42:07,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:07,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339057342] [2020-10-14 08:42:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:07,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:07,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:08,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:42:08,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:42:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1566 [2020-10-14 08:42:08,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:08,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:42:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 08:42:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:09,045 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:09,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:09,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:42:09,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:09,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:09,072 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 08:42:09,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339057342] [2020-10-14 08:42:09,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:09,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:42:09,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630704491] [2020-10-14 08:42:09,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:42:09,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:09,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:42:09,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:09,073 INFO L87 Difference]: Start difference. First operand 487 states and 687 transitions. Second operand 9 states. [2020-10-14 08:42:09,267 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:42:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:09,929 INFO L93 Difference]: Finished difference Result 889 states and 1269 transitions. [2020-10-14 08:42:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:42:09,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:42:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:09,933 INFO L225 Difference]: With dead ends: 889 [2020-10-14 08:42:09,933 INFO L226 Difference]: Without dead ends: 518 [2020-10-14 08:42:09,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:42:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-14 08:42:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 308. [2020-10-14 08:42:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-14 08:42:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 417 transitions. [2020-10-14 08:42:09,964 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 417 transitions. Word has length 55 [2020-10-14 08:42:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:09,965 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 417 transitions. [2020-10-14 08:42:09,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:42:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 417 transitions. [2020-10-14 08:42:09,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 08:42:09,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:09,966 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] [2020-10-14 08:42:09,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:42:09,966 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:09,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:09,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1758486379, now seen corresponding path program 1 times [2020-10-14 08:42:09,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:09,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017877682] [2020-10-14 08:42:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:10,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 08:42:10,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:42:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-14 08:42:10,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:10,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:42:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:42:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:42:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:10,928 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:10,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:10,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:10,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:10,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:10,947 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 08:42:10,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017877682] [2020-10-14 08:42:10,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:10,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:42:10,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900554394] [2020-10-14 08:42:10,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:42:10,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:10,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:42:10,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:10,949 INFO L87 Difference]: Start difference. First operand 308 states and 417 transitions. Second operand 9 states. [2020-10-14 08:42:11,112 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:42:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:12,017 INFO L93 Difference]: Finished difference Result 324 states and 432 transitions. [2020-10-14 08:42:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:42:12,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-14 08:42:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:12,020 INFO L225 Difference]: With dead ends: 324 [2020-10-14 08:42:12,020 INFO L226 Difference]: Without dead ends: 318 [2020-10-14 08:42:12,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:42:12,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-14 08:42:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 302. [2020-10-14 08:42:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-14 08:42:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 408 transitions. [2020-10-14 08:42:12,052 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 408 transitions. Word has length 57 [2020-10-14 08:42:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:12,052 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 408 transitions. [2020-10-14 08:42:12,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:42:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 408 transitions. [2020-10-14 08:42:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 08:42:12,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:12,053 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] [2020-10-14 08:42:12,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:42:12,053 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:12,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash 860193789, now seen corresponding path program 1 times [2020-10-14 08:42:12,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:12,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754467561] [2020-10-14 08:42:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:12,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:12,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:12,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 08:42:12,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:42:12,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-14 08:42:12,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:12,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:42:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:42:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:42:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:13,087 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:13,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:13,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:13,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:13,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:13,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:13,107 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 08:42:13,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754467561] [2020-10-14 08:42:13,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:13,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:42:13,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695196920] [2020-10-14 08:42:13,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:42:13,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:13,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:42:13,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:13,109 INFO L87 Difference]: Start difference. First operand 302 states and 408 transitions. Second operand 9 states. [2020-10-14 08:42:13,276 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:42:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:14,003 INFO L93 Difference]: Finished difference Result 304 states and 409 transitions. [2020-10-14 08:42:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:42:14,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-14 08:42:14,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:14,006 INFO L225 Difference]: With dead ends: 304 [2020-10-14 08:42:14,006 INFO L226 Difference]: Without dead ends: 292 [2020-10-14 08:42:14,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:42:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-14 08:42:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2020-10-14 08:42:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 08:42:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 394 transitions. [2020-10-14 08:42:14,038 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 394 transitions. Word has length 57 [2020-10-14 08:42:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:14,038 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 394 transitions. [2020-10-14 08:42:14,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:42:14,039 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 394 transitions. [2020-10-14 08:42:14,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 08:42:14,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:14,040 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] [2020-10-14 08:42:14,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:42:14,040 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:14,040 INFO L82 PathProgramCache]: Analyzing trace with hash -219770369, now seen corresponding path program 1 times [2020-10-14 08:42:14,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:14,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385812659] [2020-10-14 08:42:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:14,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 08:42:14,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:42:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-14 08:42:14,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:14,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:42:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:42:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 08:42:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:15,081 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:15,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:15,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:15,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:15,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:15,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:15,102 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 08:42:15,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385812659] [2020-10-14 08:42:15,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:15,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:42:15,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081926249] [2020-10-14 08:42:15,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:42:15,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:15,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:42:15,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:42:15,104 INFO L87 Difference]: Start difference. First operand 290 states and 394 transitions. Second operand 8 states. [2020-10-14 08:42:15,278 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:42:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:15,747 INFO L93 Difference]: Finished difference Result 484 states and 679 transitions. [2020-10-14 08:42:15,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:42:15,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-14 08:42:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:15,749 INFO L225 Difference]: With dead ends: 484 [2020-10-14 08:42:15,749 INFO L226 Difference]: Without dead ends: 466 [2020-10-14 08:42:15,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 08:42:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-14 08:42:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 272. [2020-10-14 08:42:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-14 08:42:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 374 transitions. [2020-10-14 08:42:15,784 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 374 transitions. Word has length 57 [2020-10-14 08:42:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:15,785 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 374 transitions. [2020-10-14 08:42:15,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:42:15,785 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 374 transitions. [2020-10-14 08:42:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 08:42:15,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:15,786 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] [2020-10-14 08:42:15,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:42:15,787 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:15,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:15,787 INFO L82 PathProgramCache]: Analyzing trace with hash 691517270, now seen corresponding path program 1 times [2020-10-14 08:42:15,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:15,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904728835] [2020-10-14 08:42:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:16,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:20,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 08:42:20,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:42:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:42:20,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:20,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 08:42:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 08:42:20,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:20,983 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:20,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:20,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:42:20,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:20,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:21,010 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 08:42:21,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904728835] [2020-10-14 08:42:21,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:21,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:21,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743311812] [2020-10-14 08:42:21,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:21,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:21,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:21,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:21,012 INFO L87 Difference]: Start difference. First operand 272 states and 374 transitions. Second operand 4 states. [2020-10-14 08:42:21,178 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:42:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:21,592 INFO L93 Difference]: Finished difference Result 588 states and 860 transitions. [2020-10-14 08:42:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:21,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-14 08:42:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:21,594 INFO L225 Difference]: With dead ends: 588 [2020-10-14 08:42:21,594 INFO L226 Difference]: Without dead ends: 422 [2020-10-14 08:42:21,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-14 08:42:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 404. [2020-10-14 08:42:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-14 08:42:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 578 transitions. [2020-10-14 08:42:21,676 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 578 transitions. Word has length 75 [2020-10-14 08:42:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:21,677 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 578 transitions. [2020-10-14 08:42:21,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 578 transitions. [2020-10-14 08:42:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 08:42:21,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:21,679 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] [2020-10-14 08:42:21,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:42:21,680 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash -858250474, now seen corresponding path program 1 times [2020-10-14 08:42:21,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:21,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531001713] [2020-10-14 08:42:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:21,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:22,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:23,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:23,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:26,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 08:42:26,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:42:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:42:26,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:26,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 08:42:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 08:42:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:26,868 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:26,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:26,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:42:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:26,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:26,890 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 08:42:26,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531001713] [2020-10-14 08:42:26,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:26,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:26,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945712784] [2020-10-14 08:42:26,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:26,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:26,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:26,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:26,892 INFO L87 Difference]: Start difference. First operand 404 states and 578 transitions. Second operand 4 states. [2020-10-14 08:42:27,044 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:42:27,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:27,488 INFO L93 Difference]: Finished difference Result 968 states and 1444 transitions. [2020-10-14 08:42:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:27,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-14 08:42:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:27,491 INFO L225 Difference]: With dead ends: 968 [2020-10-14 08:42:27,491 INFO L226 Difference]: Without dead ends: 670 [2020-10-14 08:42:27,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-14 08:42:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 636. [2020-10-14 08:42:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-14 08:42:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 930 transitions. [2020-10-14 08:42:27,570 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 930 transitions. Word has length 76 [2020-10-14 08:42:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:27,570 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 930 transitions. [2020-10-14 08:42:27,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 930 transitions. [2020-10-14 08:42:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 08:42:27,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:27,571 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] [2020-10-14 08:42:27,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:42:27,571 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:27,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:27,572 INFO L82 PathProgramCache]: Analyzing trace with hash 57506913, now seen corresponding path program 1 times [2020-10-14 08:42:27,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:27,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977093671] [2020-10-14 08:42:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:30,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:32,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:32,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 08:42:32,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:42:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:42:32,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:32,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 08:42:32,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:32,747 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:32,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:32,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:32,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:32,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:42:32,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:32,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:32,782 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 08:42:32,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977093671] [2020-10-14 08:42:32,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:32,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:42:32,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459344016] [2020-10-14 08:42:32,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:32,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:32,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:32,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:32,784 INFO L87 Difference]: Start difference. First operand 636 states and 930 transitions. Second operand 6 states. [2020-10-14 08:42:32,951 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 08:42:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:33,416 INFO L93 Difference]: Finished difference Result 904 states and 1340 transitions. [2020-10-14 08:42:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:42:33,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-14 08:42:33,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:33,419 INFO L225 Difference]: With dead ends: 904 [2020-10-14 08:42:33,419 INFO L226 Difference]: Without dead ends: 638 [2020-10-14 08:42:33,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-14 08:42:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 346. [2020-10-14 08:42:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-14 08:42:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 492 transitions. [2020-10-14 08:42:33,482 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 492 transitions. Word has length 77 [2020-10-14 08:42:33,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:33,483 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 492 transitions. [2020-10-14 08:42:33,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:33,483 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 492 transitions. [2020-10-14 08:42:33,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 08:42:33,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:33,484 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] [2020-10-14 08:42:33,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:42:33,484 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:33,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1061868034, now seen corresponding path program 1 times [2020-10-14 08:42:33,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:33,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291200925] [2020-10-14 08:42:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:35,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:35,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:37,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:38,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:38,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 08:42:38,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:42:38,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:42:38,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:38,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 08:42:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 08:42:38,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:38,651 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:38,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:38,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:38,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:38,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:38,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:38,671 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 08:42:38,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291200925] [2020-10-14 08:42:38,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:38,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:38,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937217863] [2020-10-14 08:42:38,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:38,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:38,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:38,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:38,673 INFO L87 Difference]: Start difference. First operand 346 states and 492 transitions. Second operand 4 states. [2020-10-14 08:42:38,820 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:42:39,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:39,199 INFO L93 Difference]: Finished difference Result 846 states and 1238 transitions. [2020-10-14 08:42:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:39,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-14 08:42:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:39,203 INFO L225 Difference]: With dead ends: 846 [2020-10-14 08:42:39,204 INFO L226 Difference]: Without dead ends: 580 [2020-10-14 08:42:39,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-14 08:42:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 578. [2020-10-14 08:42:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-14 08:42:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 824 transitions. [2020-10-14 08:42:39,307 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 824 transitions. Word has length 77 [2020-10-14 08:42:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:39,307 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 824 transitions. [2020-10-14 08:42:39,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 824 transitions. [2020-10-14 08:42:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 08:42:39,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:39,309 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] [2020-10-14 08:42:39,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:42:39,309 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:39,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1940399098, now seen corresponding path program 1 times [2020-10-14 08:42:39,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:39,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020107280] [2020-10-14 08:42:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:43,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:43,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:43,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:44,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 08:42:44,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:42:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:42:44,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:44,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 08:42:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 08:42:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:44,475 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:44,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:44,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:44,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:44,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:44,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:42:44,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:44,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:44,498 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 08:42:44,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020107280] [2020-10-14 08:42:44,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:44,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:44,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385196303] [2020-10-14 08:42:44,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:44,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:44,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:44,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:44,499 INFO L87 Difference]: Start difference. First operand 578 states and 824 transitions. Second operand 4 states. [2020-10-14 08:42:44,647 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:42:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:45,075 INFO L93 Difference]: Finished difference Result 1342 states and 1958 transitions. [2020-10-14 08:42:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:45,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-14 08:42:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:45,080 INFO L225 Difference]: With dead ends: 1342 [2020-10-14 08:42:45,080 INFO L226 Difference]: Without dead ends: 844 [2020-10-14 08:42:45,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:45,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-14 08:42:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 842. [2020-10-14 08:42:45,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-10-14 08:42:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1204 transitions. [2020-10-14 08:42:45,212 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1204 transitions. Word has length 79 [2020-10-14 08:42:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:45,212 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1204 transitions. [2020-10-14 08:42:45,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1204 transitions. [2020-10-14 08:42:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 08:42:45,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:45,213 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] [2020-10-14 08:42:45,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:42:45,213 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:45,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1873905586, now seen corresponding path program 1 times [2020-10-14 08:42:45,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:45,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324777430] [2020-10-14 08:42:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:46,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:46,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:47,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:50,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:50,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 08:42:50,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:42:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:42:50,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:50,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 08:42:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:42:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:50,379 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:50,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:50,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:50,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:50,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:50,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:50,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:50,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:50,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:50,398 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 08:42:50,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324777430] [2020-10-14 08:42:50,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:50,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:50,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457448716] [2020-10-14 08:42:50,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:50,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:50,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:50,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:50,400 INFO L87 Difference]: Start difference. First operand 842 states and 1204 transitions. Second operand 4 states. [2020-10-14 08:42:50,556 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:42:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:51,142 INFO L93 Difference]: Finished difference Result 2230 states and 3206 transitions. [2020-10-14 08:42:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:51,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-14 08:42:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:51,147 INFO L225 Difference]: With dead ends: 2230 [2020-10-14 08:42:51,148 INFO L226 Difference]: Without dead ends: 1468 [2020-10-14 08:42:51,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2020-10-14 08:42:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1442. [2020-10-14 08:42:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2020-10-14 08:42:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2016 transitions. [2020-10-14 08:42:51,392 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2016 transitions. Word has length 79 [2020-10-14 08:42:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:51,393 INFO L479 AbstractCegarLoop]: Abstraction has 1442 states and 2016 transitions. [2020-10-14 08:42:51,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2016 transitions. [2020-10-14 08:42:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:42:51,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:51,393 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] [2020-10-14 08:42:51,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:42:51,394 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:51,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:51,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1008938646, now seen corresponding path program 1 times [2020-10-14 08:42:51,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:51,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300476303] [2020-10-14 08:42:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:56,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:42:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:42:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:42:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:56,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 08:42:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 08:42:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:56,568 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:56,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:56,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:42:56,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:56,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:56,589 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 08:42:56,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300476303] [2020-10-14 08:42:56,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:56,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:56,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118803218] [2020-10-14 08:42:56,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:56,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:56,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:56,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:56,591 INFO L87 Difference]: Start difference. First operand 1442 states and 2016 transitions. Second operand 4 states. [2020-10-14 08:42:56,753 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:42:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:57,520 INFO L93 Difference]: Finished difference Result 3574 states and 5030 transitions. [2020-10-14 08:42:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:57,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 08:42:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:57,528 INFO L225 Difference]: With dead ends: 3574 [2020-10-14 08:42:57,528 INFO L226 Difference]: Without dead ends: 2212 [2020-10-14 08:42:57,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2020-10-14 08:42:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2050. [2020-10-14 08:42:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-10-14 08:42:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2840 transitions. [2020-10-14 08:42:57,881 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2840 transitions. Word has length 80 [2020-10-14 08:42:57,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:57,881 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 2840 transitions. [2020-10-14 08:42:57,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2840 transitions. [2020-10-14 08:42:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:42:57,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:57,882 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] [2020-10-14 08:42:57,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 08:42:57,882 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash -368715971, now seen corresponding path program 1 times [2020-10-14 08:42:57,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:57,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235969298] [2020-10-14 08:42:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:57,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:02,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:02,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:43:02,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:43:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:43:02,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:02,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:43:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:43:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:03,060 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:43:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:03,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:43:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:03,089 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 08:43:03,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235969298] [2020-10-14 08:43:03,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:03,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:43:03,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771547259] [2020-10-14 08:43:03,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:03,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:03,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:03,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:03,091 INFO L87 Difference]: Start difference. First operand 2050 states and 2840 transitions. Second operand 6 states. [2020-10-14 08:43:03,254 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:43:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:03,918 INFO L93 Difference]: Finished difference Result 3036 states and 4229 transitions. [2020-10-14 08:43:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:43:03,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-14 08:43:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:03,926 INFO L225 Difference]: With dead ends: 3036 [2020-10-14 08:43:03,926 INFO L226 Difference]: Without dead ends: 2050 [2020-10-14 08:43:03,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:43:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2020-10-14 08:43:04,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1047. [2020-10-14 08:43:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-10-14 08:43:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1430 transitions. [2020-10-14 08:43:04,181 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1430 transitions. Word has length 80 [2020-10-14 08:43:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:04,181 INFO L479 AbstractCegarLoop]: Abstraction has 1047 states and 1430 transitions. [2020-10-14 08:43:04,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1430 transitions. [2020-10-14 08:43:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:43:04,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:04,182 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] [2020-10-14 08:43:04,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 08:43:04,183 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:04,183 INFO L82 PathProgramCache]: Analyzing trace with hash -255329314, now seen corresponding path program 1 times [2020-10-14 08:43:04,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:04,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385416036] [2020-10-14 08:43:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:06,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:06,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:43:06,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:43:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2076 [2020-10-14 08:43:06,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:06,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 08:43:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:43:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:06,443 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:06,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:43:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:06,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:06,465 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 08:43:06,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385416036] [2020-10-14 08:43:06,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:06,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:43:06,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291546664] [2020-10-14 08:43:06,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:06,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:06,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:06,467 INFO L87 Difference]: Start difference. First operand 1047 states and 1430 transitions. Second operand 6 states. [2020-10-14 08:43:07,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:07,346 INFO L93 Difference]: Finished difference Result 1731 states and 2336 transitions. [2020-10-14 08:43:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:43:07,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-14 08:43:07,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:07,352 INFO L225 Difference]: With dead ends: 1731 [2020-10-14 08:43:07,352 INFO L226 Difference]: Without dead ends: 1729 [2020-10-14 08:43:07,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-10-14 08:43:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1095. [2020-10-14 08:43:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-10-14 08:43:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1470 transitions. [2020-10-14 08:43:07,627 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1470 transitions. Word has length 80 [2020-10-14 08:43:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:07,627 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1470 transitions. [2020-10-14 08:43:07,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1470 transitions. [2020-10-14 08:43:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:43:07,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:07,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:07,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 08:43:07,628 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash -886067989, now seen corresponding path program 1 times [2020-10-14 08:43:07,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:07,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395188205] [2020-10-14 08:43:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:08,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:12,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:43:12,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:43:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:43:12,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:12,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:12,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:12,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 08:43:12,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 08:43:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:12,805 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:12,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:12,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:12,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:43:12,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:12,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:12,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:12,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:12,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395188205] [2020-10-14 08:43:12,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:12,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:12,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515799554] [2020-10-14 08:43:12,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:12,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:12,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:12,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:12,828 INFO L87 Difference]: Start difference. First operand 1095 states and 1470 transitions. Second operand 4 states. [2020-10-14 08:43:13,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:13,521 INFO L93 Difference]: Finished difference Result 2074 states and 2797 transitions. [2020-10-14 08:43:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:43:13,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-14 08:43:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:13,525 INFO L225 Difference]: With dead ends: 2074 [2020-10-14 08:43:13,525 INFO L226 Difference]: Without dead ends: 1040 [2020-10-14 08:43:13,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-10-14 08:43:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1038. [2020-10-14 08:43:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-10-14 08:43:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1368 transitions. [2020-10-14 08:43:13,792 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1368 transitions. Word has length 100 [2020-10-14 08:43:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:13,792 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1368 transitions. [2020-10-14 08:43:13,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:43:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1368 transitions. [2020-10-14 08:43:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:43:13,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:13,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:13,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 08:43:13,794 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:13,794 INFO L82 PathProgramCache]: Analyzing trace with hash 613622742, now seen corresponding path program 1 times [2020-10-14 08:43:13,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:13,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993091847] [2020-10-14 08:43:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:18,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:18,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:43:18,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:43:18,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:43:18,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:18,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:43:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 08:43:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:18,984 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:18,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:18,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:18,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:18,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:18,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:43:18,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:18,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 08:43:19,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993091847] [2020-10-14 08:43:19,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:43:19,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:43:19,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520850622] [2020-10-14 08:43:19,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:19,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:19,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:19,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:19,011 INFO L87 Difference]: Start difference. First operand 1038 states and 1368 transitions. Second operand 6 states. [2020-10-14 08:43:19,177 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:43:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:20,258 INFO L93 Difference]: Finished difference Result 3796 states and 5036 transitions. [2020-10-14 08:43:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:43:20,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-14 08:43:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:20,269 INFO L225 Difference]: With dead ends: 3796 [2020-10-14 08:43:20,270 INFO L226 Difference]: Without dead ends: 2819 [2020-10-14 08:43:20,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:43:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-10-14 08:43:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 1782. [2020-10-14 08:43:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1782 states. [2020-10-14 08:43:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2352 transitions. [2020-10-14 08:43:20,759 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2352 transitions. Word has length 101 [2020-10-14 08:43:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:20,759 INFO L479 AbstractCegarLoop]: Abstraction has 1782 states and 2352 transitions. [2020-10-14 08:43:20,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2352 transitions. [2020-10-14 08:43:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:43:20,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:20,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:20,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 08:43:20,761 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:20,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1055274, now seen corresponding path program 1 times [2020-10-14 08:43:20,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:20,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439166074] [2020-10-14 08:43:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:21,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:25,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:43:25,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:43:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 08:43:25,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:25,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:43:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 08:43:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:25,981 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:25,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:25,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:25,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:43:25,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:25,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 08:43:26,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439166074] [2020-10-14 08:43:26,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:43:26,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:43:26,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032837793] [2020-10-14 08:43:26,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:26,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:26,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:26,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:26,007 INFO L87 Difference]: Start difference. First operand 1782 states and 2352 transitions. Second operand 6 states. [2020-10-14 08:43:26,175 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:43:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:27,593 INFO L93 Difference]: Finished difference Result 4910 states and 6498 transitions. [2020-10-14 08:43:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:43:27,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-14 08:43:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:27,603 INFO L225 Difference]: With dead ends: 4910 [2020-10-14 08:43:27,603 INFO L226 Difference]: Without dead ends: 3933 [2020-10-14 08:43:27,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:43:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2020-10-14 08:43:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 2878. [2020-10-14 08:43:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2020-10-14 08:43:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 3796 transitions. [2020-10-14 08:43:28,385 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 3796 transitions. Word has length 101 [2020-10-14 08:43:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:28,385 INFO L479 AbstractCegarLoop]: Abstraction has 2878 states and 3796 transitions. [2020-10-14 08:43:28,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 3796 transitions. [2020-10-14 08:43:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:43:28,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:28,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:28,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 08:43:28,387 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:28,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1452842538, now seen corresponding path program 1 times [2020-10-14 08:43:28,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:28,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357410094] [2020-10-14 08:43:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:28,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:29,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:30,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:30,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:30,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:30,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:31,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:31,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:33,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:33,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:33,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:43:33,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:43:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:43:33,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:33,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:43:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 08:43:33,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:33,584 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:33,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:33,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:33,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:33,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:43:33,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:33,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:33,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 08:43:33,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357410094] [2020-10-14 08:43:33,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:43:33,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:43:33,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824635642] [2020-10-14 08:43:33,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:33,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:33,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:33,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:33,608 INFO L87 Difference]: Start difference. First operand 2878 states and 3796 transitions. Second operand 6 states. [2020-10-14 08:43:33,776 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:43:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:35,286 INFO L93 Difference]: Finished difference Result 5095 states and 6748 transitions. [2020-10-14 08:43:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:43:35,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-14 08:43:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:35,295 INFO L225 Difference]: With dead ends: 5095 [2020-10-14 08:43:35,295 INFO L226 Difference]: Without dead ends: 4118 [2020-10-14 08:43:35,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2020-10-14 08:43:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 3982. [2020-10-14 08:43:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3982 states. [2020-10-14 08:43:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5272 transitions. [2020-10-14 08:43:36,503 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5272 transitions. Word has length 101 [2020-10-14 08:43:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:36,503 INFO L479 AbstractCegarLoop]: Abstraction has 3982 states and 5272 transitions. [2020-10-14 08:43:36,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:36,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5272 transitions. [2020-10-14 08:43:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:43:36,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:36,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:36,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 08:43:36,505 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:36,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:36,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1685296721, now seen corresponding path program 1 times [2020-10-14 08:43:36,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:36,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306864374] [2020-10-14 08:43:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:41,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:41,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:43:41,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:43:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:43:41,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:41,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:43:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:43:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 08:43:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:41,806 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:41,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:41,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:41,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:43:41,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:41,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:41,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306864374] [2020-10-14 08:43:41,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:43:41,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 08:43:41,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514143751] [2020-10-14 08:43:41,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:43:41,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:41,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:43:41,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:41,839 INFO L87 Difference]: Start difference. First operand 3982 states and 5272 transitions. Second operand 9 states. [2020-10-14 08:43:42,035 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:43:48,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:48,720 INFO L93 Difference]: Finished difference Result 21051 states and 27670 transitions. [2020-10-14 08:43:48,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 08:43:48,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-14 08:43:48,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:48,750 INFO L225 Difference]: With dead ends: 21051 [2020-10-14 08:43:48,750 INFO L226 Difference]: Without dead ends: 17130 [2020-10-14 08:43:48,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:43:48,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17130 states. [2020-10-14 08:43:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17130 to 8501. [2020-10-14 08:43:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8501 states. [2020-10-14 08:43:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8501 states to 8501 states and 11196 transitions. [2020-10-14 08:43:51,494 INFO L78 Accepts]: Start accepts. Automaton has 8501 states and 11196 transitions. Word has length 102 [2020-10-14 08:43:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:51,494 INFO L479 AbstractCegarLoop]: Abstraction has 8501 states and 11196 transitions. [2020-10-14 08:43:51,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:43:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8501 states and 11196 transitions. [2020-10-14 08:43:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:43:51,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:51,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:51,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 08:43:51,496 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:51,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1439626321, now seen corresponding path program 1 times [2020-10-14 08:43:51,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:51,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949521830] [2020-10-14 08:43:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:51,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:54,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:56,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:43:56,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:43:56,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:43:56,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:56,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 08:43:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:43:56,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:56,669 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:56,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:43:56,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:56,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 08:43:56,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949521830] [2020-10-14 08:43:56,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:56,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:56,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420706765] [2020-10-14 08:43:56,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:56,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:56,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:56,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:56,693 INFO L87 Difference]: Start difference. First operand 8501 states and 11196 transitions. Second operand 4 states. [2020-10-14 08:43:59,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:59,252 INFO L93 Difference]: Finished difference Result 16211 states and 21457 transitions. [2020-10-14 08:43:59,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:43:59,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:43:59,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:59,266 INFO L225 Difference]: With dead ends: 16211 [2020-10-14 08:43:59,267 INFO L226 Difference]: Without dead ends: 7778 [2020-10-14 08:43:59,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2020-10-14 08:44:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 7778. [2020-10-14 08:44:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7778 states. [2020-10-14 08:44:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 10203 transitions. [2020-10-14 08:44:01,750 INFO L78 Accepts]: Start accepts. Automaton has 7778 states and 10203 transitions. Word has length 103 [2020-10-14 08:44:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:01,750 INFO L479 AbstractCegarLoop]: Abstraction has 7778 states and 10203 transitions. [2020-10-14 08:44:01,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:44:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7778 states and 10203 transitions. [2020-10-14 08:44:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:44:01,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:01,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:44:01,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 08:44:01,753 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:01,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:01,754 INFO L82 PathProgramCache]: Analyzing trace with hash -291173729, now seen corresponding path program 1 times [2020-10-14 08:44:01,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:01,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954535681] [2020-10-14 08:44:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:01,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:06,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:44:06,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-14 08:44:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:44:06,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:06,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:44:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:44:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:44:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:07,157 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:44:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:07,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:07,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:07,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:07,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:44:07,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:07,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:07,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:07,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:07,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:07,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:07,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954535681] [2020-10-14 08:44:07,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:44:07,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:44:07,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563370696] [2020-10-14 08:44:07,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:44:07,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:07,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:44:07,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:44:07,190 INFO L87 Difference]: Start difference. First operand 7778 states and 10203 transitions. Second operand 10 states. [2020-10-14 08:44:07,388 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:44:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:12,461 INFO L93 Difference]: Finished difference Result 14454 states and 18791 transitions. [2020-10-14 08:44:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 08:44:12,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-10-14 08:44:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:12,483 INFO L225 Difference]: With dead ends: 14454 [2020-10-14 08:44:12,483 INFO L226 Difference]: Without dead ends: 11812 [2020-10-14 08:44:12,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-14 08:44:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11812 states. [2020-10-14 08:44:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11812 to 7778. [2020-10-14 08:44:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7778 states. [2020-10-14 08:44:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 10181 transitions. [2020-10-14 08:44:15,069 INFO L78 Accepts]: Start accepts. Automaton has 7778 states and 10181 transitions. Word has length 103 [2020-10-14 08:44:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:15,069 INFO L479 AbstractCegarLoop]: Abstraction has 7778 states and 10181 transitions. [2020-10-14 08:44:15,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:44:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 7778 states and 10181 transitions. [2020-10-14 08:44:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:44:15,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:15,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:44:15,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 08:44:15,071 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:15,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:15,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1162116908, now seen corresponding path program 1 times [2020-10-14 08:44:15,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:15,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610505230] [2020-10-14 08:44:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:20,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:20,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:44:20,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:44:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:44:20,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:20,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:44:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:44:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:44:20,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:20,367 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:44:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:20,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:20,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:20,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:20,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:44:20,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:20,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:44:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 08:44:20,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610505230] [2020-10-14 08:44:20,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:20,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:44:20,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129847488] [2020-10-14 08:44:20,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:44:20,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:20,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:44:20,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:44:20,438 INFO L87 Difference]: Start difference. First operand 7778 states and 10181 transitions. Second operand 10 states. [2020-10-14 08:44:20,656 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:44:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:26,711 INFO L93 Difference]: Finished difference Result 23480 states and 30683 transitions. [2020-10-14 08:44:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:44:26,712 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-10-14 08:44:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:26,733 INFO L225 Difference]: With dead ends: 23480 [2020-10-14 08:44:26,733 INFO L226 Difference]: Without dead ends: 15764 [2020-10-14 08:44:26,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-14 08:44:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15764 states. [2020-10-14 08:44:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15764 to 7778. [2020-10-14 08:44:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7778 states. [2020-10-14 08:44:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 10180 transitions. [2020-10-14 08:44:29,263 INFO L78 Accepts]: Start accepts. Automaton has 7778 states and 10180 transitions. Word has length 103 [2020-10-14 08:44:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:29,263 INFO L479 AbstractCegarLoop]: Abstraction has 7778 states and 10180 transitions. [2020-10-14 08:44:29,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:44:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7778 states and 10180 transitions. [2020-10-14 08:44:29,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:44:29,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:29,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:44:29,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 08:44:29,265 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:29,266 INFO L82 PathProgramCache]: Analyzing trace with hash 533767884, now seen corresponding path program 1 times [2020-10-14 08:44:29,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:29,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106849209] [2020-10-14 08:44:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:29,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:34,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:34,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:44:34,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:44:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:44:34,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:34,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 08:44:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:44:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 08:44:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:34,780 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:44:34,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:34,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:34,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:34,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:34,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:34,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:44:34,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:34,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:44:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:34,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106849209] [2020-10-14 08:44:34,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:44:34,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 08:44:34,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920447405] [2020-10-14 08:44:34,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 08:44:34,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:34,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 08:44:34,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 08:44:34,824 INFO L87 Difference]: Start difference. First operand 7778 states and 10180 transitions. Second operand 12 states. [2020-10-14 08:44:35,219 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 147 [2020-10-14 08:44:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:50,489 INFO L93 Difference]: Finished difference Result 42104 states and 54564 transitions. [2020-10-14 08:44:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 08:44:50,489 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-10-14 08:44:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:50,534 INFO L225 Difference]: With dead ends: 42104 [2020-10-14 08:44:50,535 INFO L226 Difference]: Without dead ends: 34394 [2020-10-14 08:44:50,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 08:44:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34394 states.