/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:10:45,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:10:45,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:10:45,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:10:45,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:10:45,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:10:45,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:10:45,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:10:45,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:10:45,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:10:45,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:10:45,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:10:45,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:10:45,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:10:45,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:10:45,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:10:45,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:10:45,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:10:45,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:10:45,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:10:45,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:10:45,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:10:45,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:10:45,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:10:45,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:10:45,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:10:45,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:10:45,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:10:45,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:10:45,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:10:45,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:10:45,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:10:45,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:10:45,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:10:45,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:10:45,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:10:45,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:10:45,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:10:45,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:10:45,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:10:45,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:10:45,641 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 [2020-10-13 15:10:45,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:10:45,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:10:45,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:10:45,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:10:45,683 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:10:45,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:10:45,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:10:45,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:10:45,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:10:45,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:10:45,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:10:45,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:10:45,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:10:45,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:10:45,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:10:45,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:10:45,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:10:45,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:10:45,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:10:45,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:10:45,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:10:45,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:10:45,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:10:45,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:10:45,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:10:45,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:10:45,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:10:45,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:10:45,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:10:45,689 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:10:46,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:10:46,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:10:46,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:10:46,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:10:46,039 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:10:46,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:10:46,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d97a0b6e/ed03a0b95c8746df8cc39804f3d7f19e/FLAG7c720e52a [2020-10-13 15:10:46,831 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:10:46,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:10:46,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d97a0b6e/ed03a0b95c8746df8cc39804f3d7f19e/FLAG7c720e52a [2020-10-13 15:10:46,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d97a0b6e/ed03a0b95c8746df8cc39804f3d7f19e [2020-10-13 15:10:46,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:10:46,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:10:46,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:10:46,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:10:46,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:10:46,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:10:46" (1/1) ... [2020-10-13 15:10:46,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a59c72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:46, skipping insertion in model container [2020-10-13 15:10:46,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:10:46" (1/1) ... [2020-10-13 15:10:46,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:10:47,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:10:48,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:10:48,836 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:10:50,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:10:50,061 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:10:50,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50 WrapperNode [2020-10-13 15:10:50,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:10:50,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:10:50,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:10:50,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:10:50,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (1/1) ... [2020-10-13 15:10:50,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (1/1) ... [2020-10-13 15:10:50,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (1/1) ... [2020-10-13 15:10:50,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (1/1) ... [2020-10-13 15:10:50,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (1/1) ... [2020-10-13 15:10:50,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (1/1) ... [2020-10-13 15:10:50,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (1/1) ... [2020-10-13 15:10:50,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:10:50,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:10:50,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:10:50,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:10:50,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (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 [2020-10-13 15:10:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:10:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:10:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:10:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:10:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:10:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:10:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 15:10:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:10:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:10:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:10:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:10:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:10:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:10:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:10:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:10:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:10:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:10:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 15:10:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:10:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:10:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:10:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:10:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:10:54,848 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:10:54,848 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:10:54,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:10:54 BoogieIcfgContainer [2020-10-13 15:10:54,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:10:54,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:10:54,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:10:54,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:10:54,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:10:46" (1/3) ... [2020-10-13 15:10:54,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1869d50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:10:54, skipping insertion in model container [2020-10-13 15:10:54,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:50" (2/3) ... [2020-10-13 15:10:54,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1869d50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:10:54, skipping insertion in model container [2020-10-13 15:10:54,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:10:54" (3/3) ... [2020-10-13 15:10:54,868 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:10:54,879 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:10:54,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 15:10:54,903 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 15:10:54,937 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:10:54,937 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:10:54,937 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:10:54,937 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:10:54,938 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:10:54,938 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:10:54,938 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:10:54,938 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:10:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states. [2020-10-13 15:10:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-13 15:10:55,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:55,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:55,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:55,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1738290825, now seen corresponding path program 1 times [2020-10-13 15:10:55,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:55,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946003788] [2020-10-13 15:10:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:02,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:02,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-13 15:11:02,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:11:02,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-13 15:11:02,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:11:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 15:11:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:11:04,111 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-13 15:11:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:04,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:04,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:04,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 15:11:04,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:04,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:11:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:04,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946003788] [2020-10-13 15:11:04,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:04,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:04,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143515338] [2020-10-13 15:11:04,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:04,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:04,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:04,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:04,936 INFO L87 Difference]: Start difference. First operand 1506 states. Second operand 5 states. [2020-10-13 15:11:22,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:22,316 INFO L93 Difference]: Finished difference Result 4460 states and 8053 transitions. [2020-10-13 15:11:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:11:22,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-10-13 15:11:22,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:22,376 INFO L225 Difference]: With dead ends: 4460 [2020-10-13 15:11:22,376 INFO L226 Difference]: Without dead ends: 2963 [2020-10-13 15:11:22,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:11:22,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-10-13 15:11:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2906. [2020-10-13 15:11:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2906 states. [2020-10-13 15:11:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4772 transitions. [2020-10-13 15:11:22,654 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4772 transitions. Word has length 493 [2020-10-13 15:11:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:22,662 INFO L479 AbstractCegarLoop]: Abstraction has 2906 states and 4772 transitions. [2020-10-13 15:11:22,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:11:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4772 transitions. [2020-10-13 15:11:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-13 15:11:22,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:22,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:22,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:11:22,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:22,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:22,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1236769392, now seen corresponding path program 1 times [2020-10-13 15:11:22,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:22,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075026132] [2020-10-13 15:11:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:23,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:28,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:28,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-13 15:11:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:11:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-13 15:11:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:11:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 15:11:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:29,403 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-13 15:11:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:29,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:29,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:29,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 15:11:29,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:29,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:11:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:30,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075026132] [2020-10-13 15:11:30,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:30,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:30,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193642019] [2020-10-13 15:11:30,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:30,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:30,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:30,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:30,102 INFO L87 Difference]: Start difference. First operand 2906 states and 4772 transitions. Second operand 5 states. [2020-10-13 15:11:46,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:46,325 INFO L93 Difference]: Finished difference Result 8625 states and 14163 transitions. [2020-10-13 15:11:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:11:46,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 495 [2020-10-13 15:11:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:46,368 INFO L225 Difference]: With dead ends: 8625 [2020-10-13 15:11:46,368 INFO L226 Difference]: Without dead ends: 5737 [2020-10-13 15:11:46,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:11:46,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2020-10-13 15:11:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5692. [2020-10-13 15:11:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5692 states. [2020-10-13 15:11:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5692 states to 5692 states and 9313 transitions. [2020-10-13 15:11:46,628 INFO L78 Accepts]: Start accepts. Automaton has 5692 states and 9313 transitions. Word has length 495 [2020-10-13 15:11:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:46,631 INFO L479 AbstractCegarLoop]: Abstraction has 5692 states and 9313 transitions. [2020-10-13 15:11:46,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:11:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5692 states and 9313 transitions. [2020-10-13 15:11:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-13 15:11:46,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:46,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:46,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:11:46,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:46,658 INFO L82 PathProgramCache]: Analyzing trace with hash -160987480, now seen corresponding path program 1 times [2020-10-13 15:11:46,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:46,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770033833] [2020-10-13 15:11:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:47,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:50,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:52,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:52,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-13 15:11:52,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:11:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:11:52,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:11:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-13 15:11:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:11:53,359 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-13 15:11:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:53,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:53,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:53,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:53,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 15:11:53,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:53,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:54,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770033833] [2020-10-13 15:11:54,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:54,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:54,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91729847] [2020-10-13 15:11:54,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:54,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:54,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:54,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:54,079 INFO L87 Difference]: Start difference. First operand 5692 states and 9313 transitions. Second operand 5 states. [2020-10-13 15:12:08,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:08,468 INFO L93 Difference]: Finished difference Result 16900 states and 27646 transitions. [2020-10-13 15:12:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:12:08,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 499 [2020-10-13 15:12:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:08,525 INFO L225 Difference]: With dead ends: 16900 [2020-10-13 15:12:08,525 INFO L226 Difference]: Without dead ends: 11243 [2020-10-13 15:12:08,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:12:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11243 states. [2020-10-13 15:12:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11243 to 11210. [2020-10-13 15:12:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11210 states. [2020-10-13 15:12:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11210 states to 11210 states and 18266 transitions. [2020-10-13 15:12:08,953 INFO L78 Accepts]: Start accepts. Automaton has 11210 states and 18266 transitions. Word has length 499 [2020-10-13 15:12:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:08,954 INFO L479 AbstractCegarLoop]: Abstraction has 11210 states and 18266 transitions. [2020-10-13 15:12:08,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 11210 states and 18266 transitions. [2020-10-13 15:12:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-13 15:12:08,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:08,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:08,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:12:08,990 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:08,990 INFO L82 PathProgramCache]: Analyzing trace with hash 92355610, now seen corresponding path program 1 times [2020-10-13 15:12:08,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:08,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057009440] [2020-10-13 15:12:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:10,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:10,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:14,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-13 15:12:14,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:12:14,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 15:12:14,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:12:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:12:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:12:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:14,940 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-13 15:12:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:14,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:14,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:14,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 15:12:14,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:15,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057009440] [2020-10-13 15:12:15,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:15,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:12:15,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850178847] [2020-10-13 15:12:15,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:12:15,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:15,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:12:15,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:15,140 INFO L87 Difference]: Start difference. First operand 11210 states and 18266 transitions. Second operand 4 states. [2020-10-13 15:12:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:34,339 INFO L93 Difference]: Finished difference Result 33491 states and 54571 transitions. [2020-10-13 15:12:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:12:34,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 502 [2020-10-13 15:12:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:34,416 INFO L225 Difference]: With dead ends: 33491 [2020-10-13 15:12:34,417 INFO L226 Difference]: Without dead ends: 22347 [2020-10-13 15:12:34,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:34,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2020-10-13 15:12:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 11273. [2020-10-13 15:12:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11273 states. [2020-10-13 15:12:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11273 states to 11273 states and 18350 transitions. [2020-10-13 15:12:34,967 INFO L78 Accepts]: Start accepts. Automaton has 11273 states and 18350 transitions. Word has length 502 [2020-10-13 15:12:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:34,968 INFO L479 AbstractCegarLoop]: Abstraction has 11273 states and 18350 transitions. [2020-10-13 15:12:34,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:12:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 11273 states and 18350 transitions. [2020-10-13 15:12:35,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-13 15:12:35,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:35,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:35,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:12:35,002 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:35,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:35,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1958152537, now seen corresponding path program 1 times [2020-10-13 15:12:35,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:35,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361095375] [2020-10-13 15:12:35,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:35,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:35,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:37,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:40,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:40,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-13 15:12:40,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:12:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 15:12:40,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:12:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 15:12:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:12:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:41,112 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-13 15:12:41,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 15:12:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:41,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361095375] [2020-10-13 15:12:41,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:41,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:12:41,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554178774] [2020-10-13 15:12:41,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:12:41,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:41,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:12:41,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:41,410 INFO L87 Difference]: Start difference. First operand 11273 states and 18350 transitions. Second operand 4 states. [2020-10-13 15:12:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:54,341 INFO L93 Difference]: Finished difference Result 21984 states and 35322 transitions. [2020-10-13 15:12:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:12:54,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 503 [2020-10-13 15:12:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:54,375 INFO L225 Difference]: With dead ends: 21984 [2020-10-13 15:12:54,375 INFO L226 Difference]: Without dead ends: 15101 [2020-10-13 15:12:54,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:54,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15101 states. [2020-10-13 15:12:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15101 to 12883. [2020-10-13 15:12:54,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12883 states. [2020-10-13 15:12:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12883 states to 12883 states and 21024 transitions. [2020-10-13 15:12:54,879 INFO L78 Accepts]: Start accepts. Automaton has 12883 states and 21024 transitions. Word has length 503 [2020-10-13 15:12:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:54,879 INFO L479 AbstractCegarLoop]: Abstraction has 12883 states and 21024 transitions. [2020-10-13 15:12:54,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:12:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 12883 states and 21024 transitions. [2020-10-13 15:12:54,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-13 15:12:54,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:54,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:54,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:12:54,902 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:54,903 INFO L82 PathProgramCache]: Analyzing trace with hash 691299168, now seen corresponding path program 1 times [2020-10-13 15:12:54,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:54,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153399011] [2020-10-13 15:12:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:55,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:56,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:56,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:58,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:58,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:59,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:00,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:00,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-13 15:13:00,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 15:13:00,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 15:13:00,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:13:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:13:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-13 15:13:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:01,128 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-13 15:13:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:01,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:01,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:01,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:01,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:13:01,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:01,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:13:01,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153399011] [2020-10-13 15:13:01,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:01,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:13:01,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410411636] [2020-10-13 15:13:01,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:13:01,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:01,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:13:01,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:01,417 INFO L87 Difference]: Start difference. First operand 12883 states and 21024 transitions. Second operand 5 states. [2020-10-13 15:13:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:18,618 INFO L93 Difference]: Finished difference Result 37956 states and 61962 transitions. [2020-10-13 15:13:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:13:18,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 505 [2020-10-13 15:13:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:18,657 INFO L225 Difference]: With dead ends: 37956 [2020-10-13 15:13:18,657 INFO L226 Difference]: Without dead ends: 25206 [2020-10-13 15:13:18,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:13:18,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25206 states. [2020-10-13 15:13:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25206 to 25185. [2020-10-13 15:13:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25185 states. [2020-10-13 15:13:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25185 states to 25185 states and 40939 transitions. [2020-10-13 15:13:19,496 INFO L78 Accepts]: Start accepts. Automaton has 25185 states and 40939 transitions. Word has length 505 [2020-10-13 15:13:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:19,496 INFO L479 AbstractCegarLoop]: Abstraction has 25185 states and 40939 transitions. [2020-10-13 15:13:19,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:13:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 25185 states and 40939 transitions. [2020-10-13 15:13:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-13 15:13:19,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:19,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:13:19,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:13:19,523 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:19,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:19,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1274061831, now seen corresponding path program 1 times [2020-10-13 15:13:19,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:19,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61305740] [2020-10-13 15:13:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:20,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:20,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:24,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-13 15:13:24,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:13:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 15:13:24,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:13:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 15:13:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 15:13:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:25,756 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-13 15:13:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:25,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:25,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:25,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:25,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 15:13:25,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:13:26,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61305740] [2020-10-13 15:13:26,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:26,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:13:26,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766266178] [2020-10-13 15:13:26,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:13:26,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:26,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:13:26,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:26,039 INFO L87 Difference]: Start difference. First operand 25185 states and 40939 transitions. Second operand 5 states. [2020-10-13 15:13:46,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:46,074 INFO L93 Difference]: Finished difference Result 71280 states and 115406 transitions. [2020-10-13 15:13:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:13:46,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 505 [2020-10-13 15:13:46,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:46,137 INFO L225 Difference]: With dead ends: 71280 [2020-10-13 15:13:46,137 INFO L226 Difference]: Without dead ends: 48505 [2020-10-13 15:13:46,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:13:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48505 states. [2020-10-13 15:13:47,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48505 to 27191. [2020-10-13 15:13:47,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27191 states. [2020-10-13 15:13:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27191 states to 27191 states and 44539 transitions. [2020-10-13 15:13:47,355 INFO L78 Accepts]: Start accepts. Automaton has 27191 states and 44539 transitions. Word has length 505 [2020-10-13 15:13:47,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:47,355 INFO L479 AbstractCegarLoop]: Abstraction has 27191 states and 44539 transitions. [2020-10-13 15:13:47,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:13:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 27191 states and 44539 transitions. [2020-10-13 15:13:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-13 15:13:47,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:47,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:13:47,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:13:47,379 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:47,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1372239786, now seen corresponding path program 1 times [2020-10-13 15:13:47,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:47,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197077098] [2020-10-13 15:13:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:48,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:49,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:52,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:52,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-13 15:13:52,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:13:52,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-13 15:13:52,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:13:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:13:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:13:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:53,494 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-13 15:13:53,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:53,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:53,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:53,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:13:53,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:13:53,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197077098] [2020-10-13 15:13:53,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:53,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:13:53,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598718406] [2020-10-13 15:13:53,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:13:53,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:53,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:13:53,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:53,673 INFO L87 Difference]: Start difference. First operand 27191 states and 44539 transitions. Second operand 5 states. [2020-10-13 15:14:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:14:24,477 INFO L93 Difference]: Finished difference Result 97284 states and 157887 transitions. [2020-10-13 15:14:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:14:24,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 507 [2020-10-13 15:14:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:14:24,543 INFO L225 Difference]: With dead ends: 97284 [2020-10-13 15:14:24,543 INFO L226 Difference]: Without dead ends: 74210 [2020-10-13 15:14:24,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:14:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74210 states. [2020-10-13 15:14:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74210 to 31178. [2020-10-13 15:14:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31178 states. [2020-10-13 15:14:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31178 states to 31178 states and 51636 transitions. [2020-10-13 15:14:26,045 INFO L78 Accepts]: Start accepts. Automaton has 31178 states and 51636 transitions. Word has length 507 [2020-10-13 15:14:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:14:26,046 INFO L479 AbstractCegarLoop]: Abstraction has 31178 states and 51636 transitions. [2020-10-13 15:14:26,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:14:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 31178 states and 51636 transitions. [2020-10-13 15:14:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-13 15:14:26,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:14:26,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:14:26,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:14:26,071 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:14:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:14:26,072 INFO L82 PathProgramCache]: Analyzing trace with hash -609959907, now seen corresponding path program 1 times [2020-10-13 15:14:26,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:14:26,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55885253] [2020-10-13 15:14:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:14:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:26,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:26,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:27,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:27,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking...