/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:51:41,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:51:41,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:51:41,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:51:41,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:51:41,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:51:41,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:51:41,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:51:41,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:51:41,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:51:41,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:51:41,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:51:41,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:51:41,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:51:41,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:51:41,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:51:41,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:51:41,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:51:41,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:51:41,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:51:41,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:51:41,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:51:41,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:51:41,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:51:41,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:51:41,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:51:41,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:51:41,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:51:41,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:51:41,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:51:41,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:51:41,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:51:41,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:51:41,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:51:41,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:51:41,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:51:41,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:51:41,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:51:41,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:51:41,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:51:41,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:51:41,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:51:41,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:51:41,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:51:41,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:51:41,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:51:41,728 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:51:41,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:51:41,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:51:41,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:51:41,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:51:41,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:51:41,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:51:41,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:51:41,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:51:41,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:51:41,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:51:41,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:51:41,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:51:41,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:51:41,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:51:41,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:51:41,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:51:41,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:51:41,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:51:41,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:51:41,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:51:41,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:51:41,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:51:41,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:51:41,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:51:41,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:51:42,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:51:42,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:51:42,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:51:42,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:51:42,045 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:51:42,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 08:51:42,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d386e30a/9797a5d1901042afa604a8cfb7dc6a2a/FLAGf05d78476 [2020-10-14 08:51:42,712 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:51:42,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 08:51:42,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d386e30a/9797a5d1901042afa604a8cfb7dc6a2a/FLAGf05d78476 [2020-10-14 08:51:42,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d386e30a/9797a5d1901042afa604a8cfb7dc6a2a [2020-10-14 08:51:42,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:51:42,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:51:42,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:51:42,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:51:42,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:51:42,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:51:42" (1/1) ... [2020-10-14 08:51:42,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a00abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:42, skipping insertion in model container [2020-10-14 08:51:42,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:51:42" (1/1) ... [2020-10-14 08:51:42,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:51:43,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:51:43,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:51:43,398 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:51:43,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:51:43,658 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:51:43,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43 WrapperNode [2020-10-14 08:51:43,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:51:43,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:51:43,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:51:43,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:51:43,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (1/1) ... [2020-10-14 08:51:43,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (1/1) ... [2020-10-14 08:51:43,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (1/1) ... [2020-10-14 08:51:43,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (1/1) ... [2020-10-14 08:51:43,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (1/1) ... [2020-10-14 08:51:43,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (1/1) ... [2020-10-14 08:51:43,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (1/1) ... [2020-10-14 08:51:43,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:51:43,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:51:43,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:51:43,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:51:43,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:51:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:51:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:51:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:51:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:51:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:51:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:51:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:51:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:51:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:51:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:51:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:51:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:51:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:51:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:51:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:51:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:51:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:51:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:51:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:51:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:51:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:51:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:51:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:51:44,729 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:51:44,729 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:51:44,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:51:44 BoogieIcfgContainer [2020-10-14 08:51:44,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:51:44,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:51:44,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:51:44,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:51:44,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:51:42" (1/3) ... [2020-10-14 08:51:44,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1facd92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:51:44, skipping insertion in model container [2020-10-14 08:51:44,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:43" (2/3) ... [2020-10-14 08:51:44,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1facd92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:51:44, skipping insertion in model container [2020-10-14 08:51:44,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:51:44" (3/3) ... [2020-10-14 08:51:44,745 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 08:51:44,756 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:51:44,765 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:51:44,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:51:44,828 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:51:44,828 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:51:44,828 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:51:44,829 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:51:44,829 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:51:44,829 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:51:44,829 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:51:44,830 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:51:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-14 08:51:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 08:51:44,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:44,867 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] [2020-10-14 08:51:44,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:44,874 INFO L82 PathProgramCache]: Analyzing trace with hash -541697796, now seen corresponding path program 1 times [2020-10-14 08:51:44,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:44,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945647063] [2020-10-14 08:51:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:50,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:50,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 08:51:50,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:51:50,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 08:51:50,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:50,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:51:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:51:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:51:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 08:51:50,747 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:51:50,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:51:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:51:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:51:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 08:51:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:51:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:51:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:51:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:51:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:51:50,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945647063] [2020-10-14 08:51:50,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:51:50,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:51:50,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113253181] [2020-10-14 08:51:50,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:51:50,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:51:50,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:51:50,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:51:50,910 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 6 states. [2020-10-14 08:51:51,221 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:51:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:51:52,337 INFO L93 Difference]: Finished difference Result 392 states and 650 transitions. [2020-10-14 08:51:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:51:52,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-14 08:51:52,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:51:52,356 INFO L225 Difference]: With dead ends: 392 [2020-10-14 08:51:52,356 INFO L226 Difference]: Without dead ends: 260 [2020-10-14 08:51:52,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:51:52,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-14 08:51:52,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2020-10-14 08:51:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-14 08:51:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 368 transitions. [2020-10-14 08:51:52,432 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 368 transitions. Word has length 95 [2020-10-14 08:51:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:51:52,433 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 368 transitions. [2020-10-14 08:51:52,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:51:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 368 transitions. [2020-10-14 08:51:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 08:51:52,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:52,437 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] [2020-10-14 08:51:52,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:51:52,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash 310581276, now seen corresponding path program 1 times [2020-10-14 08:51:52,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:52,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252436268] [2020-10-14 08:51:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:52,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:52,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:53,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:57,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:57,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 08:51:57,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:51:57,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:51:57,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:57,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:51:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:51:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 08:51:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:51:57,787 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:51:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:51:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:57,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:57,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:51:57,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:51:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:51:57,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:57,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:51:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:51:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:51:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:51:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:51:57,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252436268] [2020-10-14 08:51:57,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:51:57,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:51:57,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358520178] [2020-10-14 08:51:57,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:51:57,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:51:57,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:51:57,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:51:57,850 INFO L87 Difference]: Start difference. First operand 258 states and 368 transitions. Second operand 6 states. [2020-10-14 08:51:58,110 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:51:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:51:58,880 INFO L93 Difference]: Finished difference Result 584 states and 878 transitions. [2020-10-14 08:51:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:51:58,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-14 08:51:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:51:58,886 INFO L225 Difference]: With dead ends: 584 [2020-10-14 08:51:58,886 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 08:51:58,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:51:58,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 08:51:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 395. [2020-10-14 08:51:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-14 08:51:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 582 transitions. [2020-10-14 08:51:58,945 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 582 transitions. Word has length 96 [2020-10-14 08:51:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:51:58,948 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 582 transitions. [2020-10-14 08:51:58,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:51:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 582 transitions. [2020-10-14 08:51:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:51:58,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:58,957 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] [2020-10-14 08:51:58,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:51:58,958 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:58,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:58,958 INFO L82 PathProgramCache]: Analyzing trace with hash -706667812, now seen corresponding path program 1 times [2020-10-14 08:51:58,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:58,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463547556] [2020-10-14 08:51:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:59,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:02,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:03,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:03,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:52:03,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:52:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:52:03,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:03,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:52:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:52:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 08:52:03,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:04,231 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:04,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:04,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:04,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:04,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:52:04,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:04,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:52:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:04,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463547556] [2020-10-14 08:52:04,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:04,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:52:04,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082771551] [2020-10-14 08:52:04,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:52:04,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:04,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:52:04,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:52:04,300 INFO L87 Difference]: Start difference. First operand 395 states and 582 transitions. Second operand 6 states. [2020-10-14 08:52:04,501 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:52:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:05,309 INFO L93 Difference]: Finished difference Result 723 states and 1093 transitions. [2020-10-14 08:52:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:52:05,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:52:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:05,313 INFO L225 Difference]: With dead ends: 723 [2020-10-14 08:52:05,314 INFO L226 Difference]: Without dead ends: 395 [2020-10-14 08:52:05,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:52:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-14 08:52:05,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2020-10-14 08:52:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-14 08:52:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 577 transitions. [2020-10-14 08:52:05,357 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 577 transitions. Word has length 97 [2020-10-14 08:52:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:05,359 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 577 transitions. [2020-10-14 08:52:05,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:52:05,360 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 577 transitions. [2020-10-14 08:52:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 08:52:05,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:05,371 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] [2020-10-14 08:52:05,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:52:05,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:05,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:05,372 INFO L82 PathProgramCache]: Analyzing trace with hash 157096429, now seen corresponding path program 1 times [2020-10-14 08:52:05,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:05,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743990444] [2020-10-14 08:52:05,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:06,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:10,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:10,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 08:52:10,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:52:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:52:10,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:10,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:52:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:52:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:52:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:10,660 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:10,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:10,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:10,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:10,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 08:52:10,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:10,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:10,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:52:10,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:10,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743990444] [2020-10-14 08:52:10,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:10,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:52:10,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711872042] [2020-10-14 08:52:10,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:52:10,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:52:10,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:52:10,745 INFO L87 Difference]: Start difference. First operand 395 states and 577 transitions. Second operand 6 states. [2020-10-14 08:52:11,038 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:52:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:12,175 INFO L93 Difference]: Finished difference Result 1048 states and 1583 transitions. [2020-10-14 08:52:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:52:12,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-14 08:52:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:12,180 INFO L225 Difference]: With dead ends: 1048 [2020-10-14 08:52:12,180 INFO L226 Difference]: Without dead ends: 704 [2020-10-14 08:52:12,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:52:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-10-14 08:52:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 702. [2020-10-14 08:52:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-10-14 08:52:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1052 transitions. [2020-10-14 08:52:12,239 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1052 transitions. Word has length 98 [2020-10-14 08:52:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:12,239 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1052 transitions. [2020-10-14 08:52:12,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:52:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1052 transitions. [2020-10-14 08:52:12,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 08:52:12,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:12,241 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] [2020-10-14 08:52:12,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:52:12,242 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:12,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1197740734, now seen corresponding path program 1 times [2020-10-14 08:52:12,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:12,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879934487] [2020-10-14 08:52:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:12,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:14,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:17,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:17,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 08:52:17,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:52:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:52:17,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:17,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:52:17,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:52:17,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 08:52:17,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:17,508 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:17,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:17,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:17,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:17,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:52:17,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:17,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:52:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:17,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879934487] [2020-10-14 08:52:17,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:17,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:52:17,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987619418] [2020-10-14 08:52:17,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:52:17,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:17,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:52:17,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:52:17,584 INFO L87 Difference]: Start difference. First operand 702 states and 1052 transitions. Second operand 6 states. [2020-10-14 08:52:17,844 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:52:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:18,672 INFO L93 Difference]: Finished difference Result 1937 states and 2960 transitions. [2020-10-14 08:52:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:52:18,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-14 08:52:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:18,680 INFO L225 Difference]: With dead ends: 1937 [2020-10-14 08:52:18,680 INFO L226 Difference]: Without dead ends: 1294 [2020-10-14 08:52:18,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:52:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-10-14 08:52:18,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1292. [2020-10-14 08:52:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-14 08:52:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1959 transitions. [2020-10-14 08:52:18,767 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1959 transitions. Word has length 99 [2020-10-14 08:52:18,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:18,767 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1959 transitions. [2020-10-14 08:52:18,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:52:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1959 transitions. [2020-10-14 08:52:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:52:18,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:18,770 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] [2020-10-14 08:52:18,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:52:18,771 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:18,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:18,771 INFO L82 PathProgramCache]: Analyzing trace with hash 634900973, now seen corresponding path program 1 times [2020-10-14 08:52:18,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:18,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416738851] [2020-10-14 08:52:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:23,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:23,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:52:23,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:52:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:52:23,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:23,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:52:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:52:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 08:52:23,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:24,028 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:24,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:24,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:52:24,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:24,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:52:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:24,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416738851] [2020-10-14 08:52:24,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:24,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:52:24,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023655747] [2020-10-14 08:52:24,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:52:24,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:52:24,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:52:24,090 INFO L87 Difference]: Start difference. First operand 1292 states and 1959 transitions. Second operand 6 states. [2020-10-14 08:52:24,297 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:52:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:25,063 INFO L93 Difference]: Finished difference Result 2529 states and 3862 transitions. [2020-10-14 08:52:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:52:25,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-14 08:52:25,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:25,071 INFO L225 Difference]: With dead ends: 2529 [2020-10-14 08:52:25,071 INFO L226 Difference]: Without dead ends: 1292 [2020-10-14 08:52:25,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:52:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-10-14 08:52:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2020-10-14 08:52:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-14 08:52:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1942 transitions. [2020-10-14 08:52:25,155 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1942 transitions. Word has length 100 [2020-10-14 08:52:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:25,156 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1942 transitions. [2020-10-14 08:52:25,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:52:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1942 transitions. [2020-10-14 08:52:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:52:25,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:25,158 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] [2020-10-14 08:52:25,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:52:25,158 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:25,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:25,159 INFO L82 PathProgramCache]: Analyzing trace with hash 380142191, now seen corresponding path program 1 times [2020-10-14 08:52:25,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:25,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274948012] [2020-10-14 08:52:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:25,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:25,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:25,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:28,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:28,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:30,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:30,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:52:30,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:52:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:52:30,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:30,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 08:52:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 08:52:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:30,376 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:30,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:30,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:30,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:52:30,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:30,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:30,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:30,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274948012] [2020-10-14 08:52:30,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:30,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:30,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802142944] [2020-10-14 08:52:30,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:30,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:30,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:30,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:30,415 INFO L87 Difference]: Start difference. First operand 1292 states and 1942 transitions. Second operand 4 states. [2020-10-14 08:52:30,610 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:52:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:31,569 INFO L93 Difference]: Finished difference Result 3507 states and 5312 transitions. [2020-10-14 08:52:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:52:31,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 08:52:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:31,581 INFO L225 Difference]: With dead ends: 3507 [2020-10-14 08:52:31,582 INFO L226 Difference]: Without dead ends: 2433 [2020-10-14 08:52:31,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:52:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2020-10-14 08:52:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2431. [2020-10-14 08:52:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-10-14 08:52:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3646 transitions. [2020-10-14 08:52:31,729 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3646 transitions. Word has length 101 [2020-10-14 08:52:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:31,729 INFO L479 AbstractCegarLoop]: Abstraction has 2431 states and 3646 transitions. [2020-10-14 08:52:31,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3646 transitions. [2020-10-14 08:52:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:52:31,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:31,732 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] [2020-10-14 08:52:31,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:52:31,732 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:31,733 INFO L82 PathProgramCache]: Analyzing trace with hash -517178705, now seen corresponding path program 1 times [2020-10-14 08:52:31,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:31,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007128347] [2020-10-14 08:52:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:31,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:32,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:36,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:36,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:52:36,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:52:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:52:36,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:36,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:52:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:52:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 08:52:36,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:36,973 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:36,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:36,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:36,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:36,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:52:36,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:36,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:36,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:36,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:36,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:36,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:37,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007128347] [2020-10-14 08:52:37,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:37,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:52:37,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992342090] [2020-10-14 08:52:37,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:52:37,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:37,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:52:37,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:52:37,004 INFO L87 Difference]: Start difference. First operand 2431 states and 3646 transitions. Second operand 6 states. [2020-10-14 08:52:37,212 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:52:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:38,327 INFO L93 Difference]: Finished difference Result 6492 states and 9785 transitions. [2020-10-14 08:52:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:52:38,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:52:38,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:38,350 INFO L225 Difference]: With dead ends: 6492 [2020-10-14 08:52:38,350 INFO L226 Difference]: Without dead ends: 4410 [2020-10-14 08:52:38,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:52:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2020-10-14 08:52:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 3498. [2020-10-14 08:52:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3498 states. [2020-10-14 08:52:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 5270 transitions. [2020-10-14 08:52:38,577 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 5270 transitions. Word has length 103 [2020-10-14 08:52:38,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:38,578 INFO L479 AbstractCegarLoop]: Abstraction has 3498 states and 5270 transitions. [2020-10-14 08:52:38,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:52:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 5270 transitions. [2020-10-14 08:52:38,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:52:38,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:38,580 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] [2020-10-14 08:52:38,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:52:38,581 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:38,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:38,581 INFO L82 PathProgramCache]: Analyzing trace with hash -659708050, now seen corresponding path program 1 times [2020-10-14 08:52:38,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:38,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329347764] [2020-10-14 08:52:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:40,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:43,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:43,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:52:43,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:52:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:52:43,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:43,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:52:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:52:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 08:52:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:43,809 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:43,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:43,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:52:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:43,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:43,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329347764] [2020-10-14 08:52:43,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:43,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:52:43,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839172704] [2020-10-14 08:52:43,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:52:43,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:43,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:52:43,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:52:43,845 INFO L87 Difference]: Start difference. First operand 3498 states and 5270 transitions. Second operand 6 states. [2020-10-14 08:52:44,084 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:52:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:45,052 INFO L93 Difference]: Finished difference Result 10132 states and 15289 transitions. [2020-10-14 08:52:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:52:45,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:52:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:45,088 INFO L225 Difference]: With dead ends: 10132 [2020-10-14 08:52:45,088 INFO L226 Difference]: Without dead ends: 6978 [2020-10-14 08:52:45,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:52:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2020-10-14 08:52:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 5758. [2020-10-14 08:52:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5758 states. [2020-10-14 08:52:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5758 states to 5758 states and 8710 transitions. [2020-10-14 08:52:45,485 INFO L78 Accepts]: Start accepts. Automaton has 5758 states and 8710 transitions. Word has length 103 [2020-10-14 08:52:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:45,485 INFO L479 AbstractCegarLoop]: Abstraction has 5758 states and 8710 transitions. [2020-10-14 08:52:45,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:52:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5758 states and 8710 transitions. [2020-10-14 08:52:45,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:52:45,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:45,489 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] [2020-10-14 08:52:45,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:52:45,489 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1540426961, now seen corresponding path program 1 times [2020-10-14 08:52:45,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:45,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699809219] [2020-10-14 08:52:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:47,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:50,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:52:50,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:52:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:52:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:50,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 08:52:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 08:52:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:50,693 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:50,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:50,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:50,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:52:50,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:50,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:50,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699809219] [2020-10-14 08:52:50,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:50,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:50,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968314534] [2020-10-14 08:52:50,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:50,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:50,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:50,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:50,718 INFO L87 Difference]: Start difference. First operand 5758 states and 8710 transitions. Second operand 4 states. [2020-10-14 08:52:50,897 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:52:51,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:51,709 INFO L93 Difference]: Finished difference Result 12130 states and 18392 transitions. [2020-10-14 08:52:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:52:51,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:52:51,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:51,738 INFO L225 Difference]: With dead ends: 12130 [2020-10-14 08:52:51,738 INFO L226 Difference]: Without dead ends: 6832 [2020-10-14 08:52:51,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:52:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2020-10-14 08:52:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6830. [2020-10-14 08:52:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6830 states. [2020-10-14 08:52:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 10310 transitions. [2020-10-14 08:52:52,153 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 10310 transitions. Word has length 103 [2020-10-14 08:52:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:52,153 INFO L479 AbstractCegarLoop]: Abstraction has 6830 states and 10310 transitions. [2020-10-14 08:52:52,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 10310 transitions. [2020-10-14 08:52:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:52:52,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:52,157 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] [2020-10-14 08:52:52,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:52:52,157 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:52,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1299209234, now seen corresponding path program 1 times [2020-10-14 08:52:52,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:52,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592060558] [2020-10-14 08:52:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:55,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:57,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:52:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:57,372 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:52:57,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:57,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:57,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:52:57,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592060558] [2020-10-14 08:52:57,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:57,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:57,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983650831] [2020-10-14 08:52:57,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:57,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:57,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:57,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:57,403 INFO L87 Difference]: Start difference. First operand 6830 states and 10310 transitions. Second operand 4 states. [2020-10-14 08:52:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:58,590 INFO L93 Difference]: Finished difference Result 18962 states and 28520 transitions. [2020-10-14 08:52:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:52:58,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:52:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:58,711 INFO L225 Difference]: With dead ends: 18962 [2020-10-14 08:52:58,712 INFO L226 Difference]: Without dead ends: 12592 [2020-10-14 08:52:58,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12592 states. [2020-10-14 08:52:59,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12592 to 12590. [2020-10-14 08:52:59,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12590 states. [2020-10-14 08:52:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12590 states to 12590 states and 18710 transitions. [2020-10-14 08:52:59,293 INFO L78 Accepts]: Start accepts. Automaton has 12590 states and 18710 transitions. Word has length 103 [2020-10-14 08:52:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:59,293 INFO L479 AbstractCegarLoop]: Abstraction has 12590 states and 18710 transitions. [2020-10-14 08:52:59,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 12590 states and 18710 transitions. [2020-10-14 08:52:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:52:59,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:59,297 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] [2020-10-14 08:52:59,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:52:59,297 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:59,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2133083944, now seen corresponding path program 1 times [2020-10-14 08:52:59,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:59,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323674717] [2020-10-14 08:52:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:59,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:01,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:04,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:53:04,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:53:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:53:04,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:04,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:53:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 08:53:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 08:53:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:04,526 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:04,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:04,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:04,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:04,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:04,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:53:04,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323674717] [2020-10-14 08:53:04,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:04,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:53:04,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212123023] [2020-10-14 08:53:04,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:53:04,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:04,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:53:04,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:04,554 INFO L87 Difference]: Start difference. First operand 12590 states and 18710 transitions. Second operand 6 states. [2020-10-14 08:53:04,758 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:53:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:06,351 INFO L93 Difference]: Finished difference Result 28484 states and 42265 transitions. [2020-10-14 08:53:06,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:53:06,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:53:06,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:06,389 INFO L225 Difference]: With dead ends: 28484 [2020-10-14 08:53:06,390 INFO L226 Difference]: Without dead ends: 16354 [2020-10-14 08:53:06,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:53:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16354 states. [2020-10-14 08:53:07,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16354 to 14630. [2020-10-14 08:53:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14630 states. [2020-10-14 08:53:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14630 states to 14630 states and 21742 transitions. [2020-10-14 08:53:07,123 INFO L78 Accepts]: Start accepts. Automaton has 14630 states and 21742 transitions. Word has length 103 [2020-10-14 08:53:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:07,124 INFO L479 AbstractCegarLoop]: Abstraction has 14630 states and 21742 transitions. [2020-10-14 08:53:07,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:53:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 14630 states and 21742 transitions. [2020-10-14 08:53:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:53:07,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:07,127 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] [2020-10-14 08:53:07,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:53:07,127 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:07,127 INFO L82 PathProgramCache]: Analyzing trace with hash -528261669, now seen corresponding path program 1 times [2020-10-14 08:53:07,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:07,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154609627] [2020-10-14 08:53:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:07,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:09,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:12,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:12,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:53:12,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:53:12,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:53:12,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:12,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:53:12,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:53:12,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:53:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:12,370 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:12,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:12,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:12,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:12,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:12,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:12,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:12,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:12,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:53:12,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154609627] [2020-10-14 08:53:12,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:12,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:53:12,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269363774] [2020-10-14 08:53:12,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:53:12,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:53:12,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:12,398 INFO L87 Difference]: Start difference. First operand 14630 states and 21742 transitions. Second operand 6 states. [2020-10-14 08:53:12,602 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:53:14,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:14,306 INFO L93 Difference]: Finished difference Result 33036 states and 48985 transitions. [2020-10-14 08:53:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:53:14,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:53:14,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:14,339 INFO L225 Difference]: With dead ends: 33036 [2020-10-14 08:53:14,339 INFO L226 Difference]: Without dead ends: 18874 [2020-10-14 08:53:14,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:53:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18874 states. [2020-10-14 08:53:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18874 to 16718. [2020-10-14 08:53:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16718 states. [2020-10-14 08:53:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16718 states to 16718 states and 24846 transitions. [2020-10-14 08:53:15,126 INFO L78 Accepts]: Start accepts. Automaton has 16718 states and 24846 transitions. Word has length 103 [2020-10-14 08:53:15,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:15,126 INFO L479 AbstractCegarLoop]: Abstraction has 16718 states and 24846 transitions. [2020-10-14 08:53:15,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:53:15,126 INFO L276 IsEmpty]: Start isEmpty. Operand 16718 states and 24846 transitions. [2020-10-14 08:53:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:53:15,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:15,129 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] [2020-10-14 08:53:15,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:53:15,130 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:15,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1854741563, now seen corresponding path program 1 times [2020-10-14 08:53:15,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:15,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711759848] [2020-10-14 08:53:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:15,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:18,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:20,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:53:20,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:53:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:53:20,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:20,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:53:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:53:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 08:53:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:20,350 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:20,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:20,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:20,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:20,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:20,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:20,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:20,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:20,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:53:20,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711759848] [2020-10-14 08:53:20,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:20,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:53:20,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120365594] [2020-10-14 08:53:20,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:53:20,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:20,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:53:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:20,382 INFO L87 Difference]: Start difference. First operand 16718 states and 24846 transitions. Second operand 6 states. [2020-10-14 08:53:20,588 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:53:22,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:22,327 INFO L93 Difference]: Finished difference Result 38214 states and 56657 transitions. [2020-10-14 08:53:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:53:22,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:53:22,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:22,362 INFO L225 Difference]: With dead ends: 38214 [2020-10-14 08:53:22,362 INFO L226 Difference]: Without dead ends: 22020 [2020-10-14 08:53:22,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:53:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22020 states. [2020-10-14 08:53:23,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22020 to 18808. [2020-10-14 08:53:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18808 states. [2020-10-14 08:53:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18808 states to 18808 states and 27958 transitions. [2020-10-14 08:53:23,495 INFO L78 Accepts]: Start accepts. Automaton has 18808 states and 27958 transitions. Word has length 103 [2020-10-14 08:53:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:23,496 INFO L479 AbstractCegarLoop]: Abstraction has 18808 states and 27958 transitions. [2020-10-14 08:53:23,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:53:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 18808 states and 27958 transitions. [2020-10-14 08:53:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:53:23,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:23,499 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] [2020-10-14 08:53:23,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:53:23,499 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:23,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1161759484, now seen corresponding path program 1 times [2020-10-14 08:53:23,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:23,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88763140] [2020-10-14 08:53:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:27,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:27,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:28,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:28,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:53:28,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:53:28,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:53:28,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:28,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:53:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:53:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:53:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:28,728 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:28,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:28,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:28,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:28,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:28,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:28,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:28,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:28,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:53:28,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88763140] [2020-10-14 08:53:28,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:28,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:53:28,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049357172] [2020-10-14 08:53:28,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:53:28,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:53:28,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:28,755 INFO L87 Difference]: Start difference. First operand 18808 states and 27958 transitions. Second operand 6 states. [2020-10-14 08:53:28,961 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:53:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:30,722 INFO L93 Difference]: Finished difference Result 43749 states and 64873 transitions. [2020-10-14 08:53:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:53:30,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:53:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:30,758 INFO L225 Difference]: With dead ends: 43749 [2020-10-14 08:53:30,759 INFO L226 Difference]: Without dead ends: 25523 [2020-10-14 08:53:30,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:53:30,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25523 states. [2020-10-14 08:53:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25523 to 20951. [2020-10-14 08:53:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20951 states. [2020-10-14 08:53:31,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20951 states to 20951 states and 31150 transitions. [2020-10-14 08:53:31,762 INFO L78 Accepts]: Start accepts. Automaton has 20951 states and 31150 transitions. Word has length 103 [2020-10-14 08:53:31,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:31,763 INFO L479 AbstractCegarLoop]: Abstraction has 20951 states and 31150 transitions. [2020-10-14 08:53:31,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:53:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand 20951 states and 31150 transitions. [2020-10-14 08:53:31,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:53:31,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:31,766 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] [2020-10-14 08:53:31,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:53:31,766 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:31,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:31,766 INFO L82 PathProgramCache]: Analyzing trace with hash 506686307, now seen corresponding path program 1 times [2020-10-14 08:53:31,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:31,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998003195] [2020-10-14 08:53:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:34,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:34,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:36,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:36,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:53:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:37,009 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:37,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:37,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:37,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:37,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:37,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:37,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:37,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:37,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:53:37,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998003195] [2020-10-14 08:53:37,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:37,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:53:37,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796102726] [2020-10-14 08:53:37,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:53:37,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:53:37,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:53:37,031 INFO L87 Difference]: Start difference. First operand 20951 states and 31150 transitions. Second operand 5 states. [2020-10-14 08:53:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:39,276 INFO L93 Difference]: Finished difference Result 34313 states and 50959 transitions. [2020-10-14 08:53:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:53:39,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 08:53:39,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:39,317 INFO L225 Difference]: With dead ends: 34313 [2020-10-14 08:53:39,317 INFO L226 Difference]: Without dead ends: 34311 [2020-10-14 08:53:39,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34311 states. [2020-10-14 08:53:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34311 to 20983. [2020-10-14 08:53:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20983 states. [2020-10-14 08:53:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20983 states to 20983 states and 31054 transitions. [2020-10-14 08:53:41,383 INFO L78 Accepts]: Start accepts. Automaton has 20983 states and 31054 transitions. Word has length 104 [2020-10-14 08:53:41,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:41,383 INFO L479 AbstractCegarLoop]: Abstraction has 20983 states and 31054 transitions. [2020-10-14 08:53:41,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:53:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 20983 states and 31054 transitions. [2020-10-14 08:53:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:53:41,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:41,386 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] [2020-10-14 08:53:41,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:53:41,386 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1851568863, now seen corresponding path program 1 times [2020-10-14 08:53:41,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:41,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835569661] [2020-10-14 08:53:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:44,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:44,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:46,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:46,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:53:46,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:53:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:53:46,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:46,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:53:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:53:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 08:53:46,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:46,632 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:46,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:46,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:53:46,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:46,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:53:46,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835569661] [2020-10-14 08:53:46,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:46,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:53:46,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803529959] [2020-10-14 08:53:46,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:53:46,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:46,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:53:46,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:53:46,670 INFO L87 Difference]: Start difference. First operand 20983 states and 31054 transitions. Second operand 5 states. [2020-10-14 08:53:46,873 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:53:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:49,407 INFO L93 Difference]: Finished difference Result 49559 states and 73436 transitions. [2020-10-14 08:53:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:53:49,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 08:53:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:49,443 INFO L225 Difference]: With dead ends: 49559 [2020-10-14 08:53:49,443 INFO L226 Difference]: Without dead ends: 29269 [2020-10-14 08:53:49,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:49,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29269 states. [2020-10-14 08:53:51,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29269 to 29267. [2020-10-14 08:53:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29267 states. [2020-10-14 08:53:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 43250 transitions. [2020-10-14 08:53:51,276 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 43250 transitions. Word has length 104 [2020-10-14 08:53:51,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:51,276 INFO L479 AbstractCegarLoop]: Abstraction has 29267 states and 43250 transitions. [2020-10-14 08:53:51,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:53:51,276 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 43250 transitions. [2020-10-14 08:53:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:53:51,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:51,278 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] [2020-10-14 08:53:51,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:53:51,278 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:51,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:51,278 INFO L82 PathProgramCache]: Analyzing trace with hash 303337390, now seen corresponding path program 1 times [2020-10-14 08:53:51,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:51,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497850930] [2020-10-14 08:53:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:51,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:51,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:52,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:53,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:55,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:56,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:56,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:53:56,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:53:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:53:56,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:56,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:53:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:53:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 08:53:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:56,605 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:53:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:56,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:53:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:53:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:53:56,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497850930] [2020-10-14 08:53:56,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:56,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:53:56,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912631816] [2020-10-14 08:53:56,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:53:56,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:56,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:53:56,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:53:56,652 INFO L87 Difference]: Start difference. First operand 29267 states and 43250 transitions. Second operand 11 states. [2020-10-14 08:53:56,895 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-14 08:54:02,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:02,301 INFO L93 Difference]: Finished difference Result 88010 states and 129671 transitions. [2020-10-14 08:54:02,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:54:02,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-14 08:54:02,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:02,365 INFO L225 Difference]: With dead ends: 88010 [2020-10-14 08:54:02,365 INFO L226 Difference]: Without dead ends: 59187 [2020-10-14 08:54:02,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:54:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59187 states. [2020-10-14 08:54:04,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59187 to 29267. [2020-10-14 08:54:04,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29267 states. [2020-10-14 08:54:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 43244 transitions. [2020-10-14 08:54:04,513 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 43244 transitions. Word has length 105 [2020-10-14 08:54:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:04,513 INFO L479 AbstractCegarLoop]: Abstraction has 29267 states and 43244 transitions. [2020-10-14 08:54:04,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:54:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 43244 transitions. [2020-10-14 08:54:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:54:04,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:04,515 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] [2020-10-14 08:54:04,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:54:04,515 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:04,516 INFO L82 PathProgramCache]: Analyzing trace with hash -891696123, now seen corresponding path program 1 times [2020-10-14 08:54:04,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:04,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599277915] [2020-10-14 08:54:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:07,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:09,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:09,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:54:09,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:54:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:54:09,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:09,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:54:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:54:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 08:54:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:09,847 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:54:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:09,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:09,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:09,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:54:09,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:09,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:54:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:54:09,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599277915] [2020-10-14 08:54:09,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:09,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:54:09,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747095350] [2020-10-14 08:54:09,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:54:09,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:09,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:54:09,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:54:09,892 INFO L87 Difference]: Start difference. First operand 29267 states and 43244 transitions. Second operand 11 states. [2020-10-14 08:54:10,151 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-14 08:54:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:14,956 INFO L93 Difference]: Finished difference Result 72918 states and 107506 transitions. [2020-10-14 08:54:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:54:14,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-14 08:54:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:15,005 INFO L225 Difference]: With dead ends: 72918 [2020-10-14 08:54:15,005 INFO L226 Difference]: Without dead ends: 44125 [2020-10-14 08:54:15,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:54:15,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44125 states. [2020-10-14 08:54:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44125 to 29267. [2020-10-14 08:54:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29267 states. [2020-10-14 08:54:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 43229 transitions. [2020-10-14 08:54:17,564 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 43229 transitions. Word has length 105 [2020-10-14 08:54:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:17,564 INFO L479 AbstractCegarLoop]: Abstraction has 29267 states and 43229 transitions. [2020-10-14 08:54:17,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:54:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 43229 transitions. [2020-10-14 08:54:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:54:17,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:17,567 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] [2020-10-14 08:54:17,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:54:17,567 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:17,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash -899347644, now seen corresponding path program 1 times [2020-10-14 08:54:17,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:17,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762436688] [2020-10-14 08:54:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:18,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:20,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:22,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:22,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:54:22,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:54:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:54:22,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:22,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:54:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:54:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 08:54:22,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:22,817 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 28 [2020-10-14 08:54:23,017 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:54:23,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:23,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:23,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:23,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:54:23,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:23,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:54:23,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762436688] [2020-10-14 08:54:23,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:23,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:54:23,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676953126] [2020-10-14 08:54:23,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:54:23,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:23,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:54:23,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:54:23,050 INFO L87 Difference]: Start difference. First operand 29267 states and 43229 transitions. Second operand 9 states. [2020-10-14 08:54:23,279 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:54:25,873 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-14 08:54:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:30,104 INFO L93 Difference]: Finished difference Result 72953 states and 107526 transitions. [2020-10-14 08:54:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:54:30,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-14 08:54:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:30,151 INFO L225 Difference]: With dead ends: 72953 [2020-10-14 08:54:30,152 INFO L226 Difference]: Without dead ends: 44125 [2020-10-14 08:54:30,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:54:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44125 states. [2020-10-14 08:54:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44125 to 29267. [2020-10-14 08:54:33,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29267 states. [2020-10-14 08:54:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 43194 transitions. [2020-10-14 08:54:33,482 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 43194 transitions. Word has length 105 [2020-10-14 08:54:33,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:33,483 INFO L479 AbstractCegarLoop]: Abstraction has 29267 states and 43194 transitions. [2020-10-14 08:54:33,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:54:33,483 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 43194 transitions. [2020-10-14 08:54:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:54:33,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:33,485 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] [2020-10-14 08:54:33,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:54:33,485 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:33,486 INFO L82 PathProgramCache]: Analyzing trace with hash 671159148, now seen corresponding path program 1 times [2020-10-14 08:54:33,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:33,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537500636] [2020-10-14 08:54:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:34,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:35,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:38,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:38,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:54:38,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:54:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:54:38,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:38,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:54:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:54:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:54:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:38,928 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:54:38,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:38,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:38,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:38,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:38,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:54:38,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:38,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:38,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:54:38,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537500636] [2020-10-14 08:54:38,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:38,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:54:38,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778585988] [2020-10-14 08:54:38,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:54:38,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:38,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:54:38,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:54:38,964 INFO L87 Difference]: Start difference. First operand 29267 states and 43194 transitions. Second operand 10 states. [2020-10-14 08:54:39,169 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:54:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:46,993 INFO L93 Difference]: Finished difference Result 71794 states and 106013 transitions. [2020-10-14 08:54:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:54:46,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-14 08:54:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:47,043 INFO L225 Difference]: With dead ends: 71794 [2020-10-14 08:54:47,043 INFO L226 Difference]: Without dead ends: 43616 [2020-10-14 08:54:47,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:54:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43616 states. [2020-10-14 08:54:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43616 to 29214. [2020-10-14 08:54:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29214 states. [2020-10-14 08:54:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29214 states to 29214 states and 43104 transitions. [2020-10-14 08:54:51,074 INFO L78 Accepts]: Start accepts. Automaton has 29214 states and 43104 transitions. Word has length 106 [2020-10-14 08:54:51,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:51,074 INFO L479 AbstractCegarLoop]: Abstraction has 29214 states and 43104 transitions. [2020-10-14 08:54:51,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:54:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 29214 states and 43104 transitions. [2020-10-14 08:54:51,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:54:51,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:51,076 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] [2020-10-14 08:54:51,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:54:51,076 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:51,077 INFO L82 PathProgramCache]: Analyzing trace with hash -2064570451, now seen corresponding path program 1 times [2020-10-14 08:54:51,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:51,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575679516] [2020-10-14 08:54:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:52,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 08:54:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:56,512 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:54:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:56,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:56,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:54:56,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:56,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:54:56,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575679516] [2020-10-14 08:54:56,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:56,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:54:56,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862214335] [2020-10-14 08:54:56,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:54:56,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:56,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:54:56,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:54:56,556 INFO L87 Difference]: Start difference. First operand 29214 states and 43104 transitions. Second operand 10 states. [2020-10-14 08:54:56,787 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:55:07,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:07,159 INFO L93 Difference]: Finished difference Result 86198 states and 127323 transitions. [2020-10-14 08:55:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:55:07,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-14 08:55:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:07,227 INFO L225 Difference]: With dead ends: 86198 [2020-10-14 08:55:07,228 INFO L226 Difference]: Without dead ends: 58000 [2020-10-14 08:55:07,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:55:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58000 states. [2020-10-14 08:55:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58000 to 29141. [2020-10-14 08:55:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29141 states. [2020-10-14 08:55:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29141 states to 29141 states and 42998 transitions. [2020-10-14 08:55:12,606 INFO L78 Accepts]: Start accepts. Automaton has 29141 states and 42998 transitions. Word has length 106 [2020-10-14 08:55:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:12,606 INFO L479 AbstractCegarLoop]: Abstraction has 29141 states and 42998 transitions. [2020-10-14 08:55:12,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:55:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 29141 states and 42998 transitions. [2020-10-14 08:55:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 08:55:12,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:12,608 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] [2020-10-14 08:55:12,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:55:12,608 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash 380427729, now seen corresponding path program 1 times [2020-10-14 08:55:12,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:12,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961721693] [2020-10-14 08:55:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:12,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:17,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:17,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 08:55:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:55:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 08:55:17,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:17,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:55:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:55:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 08:55:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:17,963 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:17,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:17,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:17,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:17,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:17,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:55:17,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:17,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:55:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:18,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961721693] [2020-10-14 08:55:18,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:18,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:55:18,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863285964] [2020-10-14 08:55:18,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:55:18,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:18,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:55:18,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:55:18,010 INFO L87 Difference]: Start difference. First operand 29141 states and 42998 transitions. Second operand 11 states. [2020-10-14 08:55:18,265 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-14 08:55:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:30,752 INFO L93 Difference]: Finished difference Result 87417 states and 128688 transitions. [2020-10-14 08:55:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:55:30,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-10-14 08:55:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:30,827 INFO L225 Difference]: With dead ends: 87417 [2020-10-14 08:55:30,827 INFO L226 Difference]: Without dead ends: 58807 [2020-10-14 08:55:30,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:55:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58807 states.