/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-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:10:41,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:10:41,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:10:41,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:10:41,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:10:41,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:10:41,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:10:41,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:10:41,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:10:41,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:10:41,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:10:41,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:10:41,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:10:41,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:10:41,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:10:41,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:10:41,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:10:41,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:10:41,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:10:41,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:10:41,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:10:41,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:10:41,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:10:41,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:10:41,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:10:41,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:10:41,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:10:41,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:10:41,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:10:41,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:10:41,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:10:41,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:10:41,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:10:41,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:10:41,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:10:41,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:10:41,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:10:41,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:10:41,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:10:41,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:10:41,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:10:41,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:10:41,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:10:41,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:10:41,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:10:41,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:10:41,693 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:10:41,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:10:41,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:10:41,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:10:41,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:10:41,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:10:41,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:10:41,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:10:41,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:10:41,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:10:41,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:10:41,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:10:41,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:10:41,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:10:41,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:10:41,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:10:41,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:10:41,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:10:41,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:10:41,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:10:41,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:10:41,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:10:41,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:10:41,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:10:41,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:10:41,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:10:41,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:10:42,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:10:42,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:10:42,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:10:42,023 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:10:42,024 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:10:42,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d7468b49/5ff08496fda24665abfab6f5b7d321a8/FLAG62d27c80e [2020-10-14 09:10:42,773 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:10:42,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:10:42,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d7468b49/5ff08496fda24665abfab6f5b7d321a8/FLAG62d27c80e [2020-10-14 09:10:42,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d7468b49/5ff08496fda24665abfab6f5b7d321a8 [2020-10-14 09:10:42,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:10:42,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:10:42,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:10:42,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:10:42,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:10:42,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:10:42" (1/1) ... [2020-10-14 09:10:42,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c32aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:42, skipping insertion in model container [2020-10-14 09:10:42,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:10:42" (1/1) ... [2020-10-14 09:10:42,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:10:43,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:10:43,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:10:43,925 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:10:44,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:10:44,541 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:10:44,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44 WrapperNode [2020-10-14 09:10:44,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:10:44,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:10:44,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:10:44,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:10:44,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (1/1) ... [2020-10-14 09:10:44,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (1/1) ... [2020-10-14 09:10:44,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (1/1) ... [2020-10-14 09:10:44,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (1/1) ... [2020-10-14 09:10:44,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (1/1) ... [2020-10-14 09:10:44,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (1/1) ... [2020-10-14 09:10:44,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (1/1) ... [2020-10-14 09:10:44,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:10:44,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:10:44,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:10:44,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:10:44,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:10:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:10:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:10:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:10:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:10:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:10:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:10:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:10:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:10:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:10:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:10:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:10:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:10:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:10:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:10:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:10:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:10:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:10:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:10:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:10:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:10:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:10:47,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:10:47,151 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:10:47,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:10:47 BoogieIcfgContainer [2020-10-14 09:10:47,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:10:47,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:10:47,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:10:47,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:10:47,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:10:42" (1/3) ... [2020-10-14 09:10:47,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42430651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:10:47, skipping insertion in model container [2020-10-14 09:10:47,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:44" (2/3) ... [2020-10-14 09:10:47,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42430651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:10:47, skipping insertion in model container [2020-10-14 09:10:47,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:10:47" (3/3) ... [2020-10-14 09:10:47,170 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:10:47,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:10:47,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 09:10:47,204 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 09:10:47,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:10:47,234 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:10:47,234 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:10:47,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:10:47,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:10:47,235 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:10:47,235 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:10:47,235 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:10:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states. [2020-10-14 09:10:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:10:47,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:47,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:47,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:47,302 INFO L82 PathProgramCache]: Analyzing trace with hash 703159597, now seen corresponding path program 1 times [2020-10-14 09:10:47,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:47,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777330130] [2020-10-14 09:10:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:47,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:52,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:10:52,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:10:52,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:10:52,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:52,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 09:10:52,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:10:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:10:53,522 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:10:53,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:53,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:53,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:53,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 09:10:53,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:53,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:10:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:53,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777330130] [2020-10-14 09:10:53,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:53,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:53,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921920790] [2020-10-14 09:10:53,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:53,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:53,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:53,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:53,669 INFO L87 Difference]: Start difference. First operand 710 states. Second operand 4 states. [2020-10-14 09:10:54,717 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2020-10-14 09:11:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:00,770 INFO L93 Difference]: Finished difference Result 1076 states and 1863 transitions. [2020-10-14 09:11:00,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:11:00,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:11:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:00,804 INFO L225 Difference]: With dead ends: 1076 [2020-10-14 09:11:00,804 INFO L226 Difference]: Without dead ends: 850 [2020-10-14 09:11:00,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:11:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-14 09:11:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 848. [2020-10-14 09:11:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-10-14 09:11:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1156 transitions. [2020-10-14 09:11:00,943 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1156 transitions. Word has length 67 [2020-10-14 09:11:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:00,943 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1156 transitions. [2020-10-14 09:11:00,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1156 transitions. [2020-10-14 09:11:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:11:00,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:00,956 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] [2020-10-14 09:11:00,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:11:00,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:00,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:00,957 INFO L82 PathProgramCache]: Analyzing trace with hash -604004858, now seen corresponding path program 1 times [2020-10-14 09:11:00,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:00,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213667673] [2020-10-14 09:11:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:01,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:06,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:06,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:11:06,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:11:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:11:06,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:06,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 09:11:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:11:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:11:07,012 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:11:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:07,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:07,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:11:07,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:07,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:11:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:07,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213667673] [2020-10-14 09:11:07,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:07,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:07,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346399972] [2020-10-14 09:11:07,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:07,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:07,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:07,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:07,069 INFO L87 Difference]: Start difference. First operand 848 states and 1156 transitions. Second operand 4 states. [2020-10-14 09:11:07,732 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2020-10-14 09:11:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:11,898 INFO L93 Difference]: Finished difference Result 1419 states and 2001 transitions. [2020-10-14 09:11:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:11:11,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:11:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:11,907 INFO L225 Difference]: With dead ends: 1419 [2020-10-14 09:11:11,907 INFO L226 Difference]: Without dead ends: 1112 [2020-10-14 09:11:11,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:11:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2020-10-14 09:11:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1108. [2020-10-14 09:11:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2020-10-14 09:11:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1533 transitions. [2020-10-14 09:11:11,996 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1533 transitions. Word has length 68 [2020-10-14 09:11:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:11,997 INFO L479 AbstractCegarLoop]: Abstraction has 1108 states and 1533 transitions. [2020-10-14 09:11:11,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1533 transitions. [2020-10-14 09:11:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:11:12,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:12,004 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] [2020-10-14 09:11:12,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:11:12,004 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:12,005 INFO L82 PathProgramCache]: Analyzing trace with hash 542454263, now seen corresponding path program 1 times [2020-10-14 09:11:12,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:12,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215739030] [2020-10-14 09:11:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:17,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:17,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:11:17,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:11:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 09:11:17,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:17,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:17,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:17,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 09:11:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:11:17,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:11:17,721 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:11:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:17,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:17,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:17,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 09:11:17,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:17,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:17,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:11:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:17,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215739030] [2020-10-14 09:11:17,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:17,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:17,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959643220] [2020-10-14 09:11:17,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:17,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:17,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:17,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:17,786 INFO L87 Difference]: Start difference. First operand 1108 states and 1533 transitions. Second operand 4 states. [2020-10-14 09:11:18,479 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2020-10-14 09:11:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:22,830 INFO L93 Difference]: Finished difference Result 2124 states and 2966 transitions. [2020-10-14 09:11:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:11:22,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:11:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:22,844 INFO L225 Difference]: With dead ends: 2124 [2020-10-14 09:11:22,845 INFO L226 Difference]: Without dead ends: 1699 [2020-10-14 09:11:22,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:11:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2020-10-14 09:11:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1695. [2020-10-14 09:11:22,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1695 states. [2020-10-14 09:11:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2321 transitions. [2020-10-14 09:11:22,913 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2321 transitions. Word has length 68 [2020-10-14 09:11:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:22,914 INFO L479 AbstractCegarLoop]: Abstraction has 1695 states and 2321 transitions. [2020-10-14 09:11:22,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2321 transitions. [2020-10-14 09:11:22,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:11:22,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:22,918 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] [2020-10-14 09:11:22,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:11:22,918 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:22,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:22,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1379100945, now seen corresponding path program 1 times [2020-10-14 09:11:22,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:22,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721387904] [2020-10-14 09:11:22,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:23,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:24,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:25,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:25,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:27,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:11:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:11:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:11:27,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:27,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:11:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:11:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:11:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:28,645 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:11:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:28,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:28,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:28,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:11:28,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:28,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:28,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:28,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721387904] [2020-10-14 09:11:28,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:28,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:11:28,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825078268] [2020-10-14 09:11:28,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:11:28,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:28,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:11:28,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:11:28,693 INFO L87 Difference]: Start difference. First operand 1695 states and 2321 transitions. Second operand 6 states. [2020-10-14 09:11:29,370 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-14 09:11:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:35,047 INFO L93 Difference]: Finished difference Result 6959 states and 10039 transitions. [2020-10-14 09:11:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:11:35,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:11:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:35,083 INFO L225 Difference]: With dead ends: 6959 [2020-10-14 09:11:35,083 INFO L226 Difference]: Without dead ends: 6046 [2020-10-14 09:11:35,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:11:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2020-10-14 09:11:35,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 3918. [2020-10-14 09:11:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3918 states. [2020-10-14 09:11:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5547 transitions. [2020-10-14 09:11:35,278 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5547 transitions. Word has length 68 [2020-10-14 09:11:35,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:35,278 INFO L479 AbstractCegarLoop]: Abstraction has 3918 states and 5547 transitions. [2020-10-14 09:11:35,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:11:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5547 transitions. [2020-10-14 09:11:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:11:35,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:35,284 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] [2020-10-14 09:11:35,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:11:35,285 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:35,285 INFO L82 PathProgramCache]: Analyzing trace with hash -259285288, now seen corresponding path program 1 times [2020-10-14 09:11:35,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:35,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259993994] [2020-10-14 09:11:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:35,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:35,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:35,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:35,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:40,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:40,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:11:40,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:11:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:11:40,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:40,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:11:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:11:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:11:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:41,044 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:11:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:41,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:41,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:41,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:41,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:41,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:11:41,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:41,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:41,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:11:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:41,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259993994] [2020-10-14 09:11:41,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:41,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:11:41,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237426479] [2020-10-14 09:11:41,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:11:41,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:41,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:11:41,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:11:41,128 INFO L87 Difference]: Start difference. First operand 3918 states and 5547 transitions. Second operand 6 states. [2020-10-14 09:11:42,130 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-14 09:11:47,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:47,605 INFO L93 Difference]: Finished difference Result 25138 states and 36355 transitions. [2020-10-14 09:11:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:11:47,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 09:11:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:47,709 INFO L225 Difference]: With dead ends: 25138 [2020-10-14 09:11:47,709 INFO L226 Difference]: Without dead ends: 21397 [2020-10-14 09:11:47,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:11:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21397 states. [2020-10-14 09:11:48,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21397 to 12177. [2020-10-14 09:11:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12177 states. [2020-10-14 09:11:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 17385 transitions. [2020-10-14 09:11:48,338 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 17385 transitions. Word has length 69 [2020-10-14 09:11:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:48,340 INFO L479 AbstractCegarLoop]: Abstraction has 12177 states and 17385 transitions. [2020-10-14 09:11:48,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:11:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 17385 transitions. [2020-10-14 09:11:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:11:48,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:48,353 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] [2020-10-14 09:11:48,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:11:48,353 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:48,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1647521536, now seen corresponding path program 1 times [2020-10-14 09:11:48,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:48,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999531912] [2020-10-14 09:11:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:52,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:53,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:53,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:53,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:11:53,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:11:53,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 09:11:53,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:53,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:11:53,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:11:53,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:11:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:54,094 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:11:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:54,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:54,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:54,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:11:54,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:54,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:54,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999531912] [2020-10-14 09:11:54,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:54,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:11:54,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191805437] [2020-10-14 09:11:54,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:11:54,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:54,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:11:54,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:11:54,132 INFO L87 Difference]: Start difference. First operand 12177 states and 17385 transitions. Second operand 6 states. [2020-10-14 09:11:54,788 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-14 09:12:00,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:00,109 INFO L93 Difference]: Finished difference Result 24565 states and 35681 transitions. [2020-10-14 09:12:00,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:12:00,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 09:12:00,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:00,155 INFO L225 Difference]: With dead ends: 24565 [2020-10-14 09:12:00,155 INFO L226 Difference]: Without dead ends: 20414 [2020-10-14 09:12:00,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:12:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20414 states. [2020-10-14 09:12:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20414 to 11958. [2020-10-14 09:12:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11958 states. [2020-10-14 09:12:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11958 states to 11958 states and 17050 transitions. [2020-10-14 09:12:00,693 INFO L78 Accepts]: Start accepts. Automaton has 11958 states and 17050 transitions. Word has length 69 [2020-10-14 09:12:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:00,694 INFO L479 AbstractCegarLoop]: Abstraction has 11958 states and 17050 transitions. [2020-10-14 09:12:00,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:12:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 11958 states and 17050 transitions. [2020-10-14 09:12:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:12:00,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:00,706 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] [2020-10-14 09:12:00,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:12:00,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:00,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:00,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1662551695, now seen corresponding path program 1 times [2020-10-14 09:12:00,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:00,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461145681] [2020-10-14 09:12:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:00,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:03,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:05,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:12:05,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:12:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:12:05,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:05,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:12:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:12:05,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:12:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:06,393 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:12:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:06,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:06,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:06,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:06,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:12:06,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:06,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:06,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461145681] [2020-10-14 09:12:06,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:06,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:12:06,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500983582] [2020-10-14 09:12:06,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:12:06,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:06,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:12:06,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:12:06,435 INFO L87 Difference]: Start difference. First operand 11958 states and 17050 transitions. Second operand 4 states. [2020-10-14 09:12:07,112 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2020-10-14 09:12:11,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:11,399 INFO L93 Difference]: Finished difference Result 30567 states and 43965 transitions. [2020-10-14 09:12:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:12:11,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 09:12:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:11,455 INFO L225 Difference]: With dead ends: 30567 [2020-10-14 09:12:11,455 INFO L226 Difference]: Without dead ends: 20742 [2020-10-14 09:12:11,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:12:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20742 states. [2020-10-14 09:12:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20742 to 20676. [2020-10-14 09:12:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20676 states. [2020-10-14 09:12:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20676 states to 20676 states and 29327 transitions. [2020-10-14 09:12:12,206 INFO L78 Accepts]: Start accepts. Automaton has 20676 states and 29327 transitions. Word has length 70 [2020-10-14 09:12:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:12,207 INFO L479 AbstractCegarLoop]: Abstraction has 20676 states and 29327 transitions. [2020-10-14 09:12:12,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:12:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 20676 states and 29327 transitions. [2020-10-14 09:12:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:12:12,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:12,223 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] [2020-10-14 09:12:12,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:12:12,223 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1400372979, now seen corresponding path program 1 times [2020-10-14 09:12:12,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:12,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715197340] [2020-10-14 09:12:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:14,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:17,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:17,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:12:17,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:12:17,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:12:17,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:17,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:12:17,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:12:17,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:12:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:17,908 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:12:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:17,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:17,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:17,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:12:17,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:17,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:12:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:12:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:17,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715197340] [2020-10-14 09:12:17,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:17,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:12:17,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245718358] [2020-10-14 09:12:17,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:12:17,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:17,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:12:17,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:12:17,959 INFO L87 Difference]: Start difference. First operand 20676 states and 29327 transitions. Second operand 6 states. [2020-10-14 09:12:18,646 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:12:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:22,858 INFO L93 Difference]: Finished difference Result 49040 states and 69457 transitions. [2020-10-14 09:12:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:12:22,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-14 09:12:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:22,911 INFO L225 Difference]: With dead ends: 49040 [2020-10-14 09:12:22,911 INFO L226 Difference]: Without dead ends: 28625 [2020-10-14 09:12:22,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:12:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28625 states. [2020-10-14 09:12:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28625 to 28493. [2020-10-14 09:12:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28493 states. [2020-10-14 09:12:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28493 states to 28493 states and 40059 transitions. [2020-10-14 09:12:24,227 INFO L78 Accepts]: Start accepts. Automaton has 28493 states and 40059 transitions. Word has length 70 [2020-10-14 09:12:24,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:24,227 INFO L479 AbstractCegarLoop]: Abstraction has 28493 states and 40059 transitions. [2020-10-14 09:12:24,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:12:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 28493 states and 40059 transitions. [2020-10-14 09:12:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:12:24,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:24,242 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] [2020-10-14 09:12:24,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:12:24,243 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:24,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1100647382, now seen corresponding path program 1 times [2020-10-14 09:12:24,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:24,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482677256] [2020-10-14 09:12:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:27,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:28,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:28,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:29,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:12:29,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:12:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:12:29,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:29,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:12:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:12:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:12:29,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:29,936 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:12:29,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:29,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:29,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:29,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:12:29,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:29,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:29,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:29,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:29,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482677256] [2020-10-14 09:12:29,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:29,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:12:29,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814881994] [2020-10-14 09:12:29,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:12:29,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:29,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:12:29,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:12:29,985 INFO L87 Difference]: Start difference. First operand 28493 states and 40059 transitions. Second operand 6 states. [2020-10-14 09:12:30,657 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-14 09:12:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:37,629 INFO L93 Difference]: Finished difference Result 61179 states and 87348 transitions. [2020-10-14 09:12:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:12:37,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-14 09:12:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:37,703 INFO L225 Difference]: With dead ends: 61179 [2020-10-14 09:12:37,703 INFO L226 Difference]: Without dead ends: 50344 [2020-10-14 09:12:37,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:12:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50344 states. [2020-10-14 09:12:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50344 to 28388. [2020-10-14 09:12:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28388 states. [2020-10-14 09:12:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28388 states to 28388 states and 39905 transitions. [2020-10-14 09:12:39,368 INFO L78 Accepts]: Start accepts. Automaton has 28388 states and 39905 transitions. Word has length 70 [2020-10-14 09:12:39,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:39,368 INFO L479 AbstractCegarLoop]: Abstraction has 28388 states and 39905 transitions. [2020-10-14 09:12:39,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:12:39,368 INFO L276 IsEmpty]: Start isEmpty. Operand 28388 states and 39905 transitions. [2020-10-14 09:12:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:12:39,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:39,380 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] [2020-10-14 09:12:39,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:12:39,380 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:39,381 INFO L82 PathProgramCache]: Analyzing trace with hash -947819912, now seen corresponding path program 1 times [2020-10-14 09:12:39,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:39,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123176249] [2020-10-14 09:12:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:39,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:44,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:44,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:12:44,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 09:12:44,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:12:44,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:44,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:12:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:12:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:12:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:45,087 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:12:45,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:45,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:45,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:45,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:45,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:12:45,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:45,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:45,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:45,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123176249] [2020-10-14 09:12:45,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:45,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:12:45,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80683698] [2020-10-14 09:12:45,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:12:45,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:45,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:12:45,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:12:45,126 INFO L87 Difference]: Start difference. First operand 28388 states and 39905 transitions. Second operand 6 states. [2020-10-14 09:12:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:53,692 INFO L93 Difference]: Finished difference Result 135553 states and 194072 transitions. [2020-10-14 09:12:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:12:53,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 09:12:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:53,878 INFO L225 Difference]: With dead ends: 135553 [2020-10-14 09:12:53,879 INFO L226 Difference]: Without dead ends: 112264 [2020-10-14 09:12:53,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:12:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112264 states. [2020-10-14 09:12:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112264 to 28442. [2020-10-14 09:12:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28442 states. [2020-10-14 09:12:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28442 states to 28442 states and 39767 transitions. [2020-10-14 09:12:57,357 INFO L78 Accepts]: Start accepts. Automaton has 28442 states and 39767 transitions. Word has length 71 [2020-10-14 09:12:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:57,357 INFO L479 AbstractCegarLoop]: Abstraction has 28442 states and 39767 transitions. [2020-10-14 09:12:57,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:12:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 28442 states and 39767 transitions. [2020-10-14 09:12:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:12:57,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:57,367 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] [2020-10-14 09:12:57,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:12:57,367 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:57,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1261427184, now seen corresponding path program 1 times [2020-10-14 09:12:57,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:57,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710908157] [2020-10-14 09:12:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:57,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:59,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:02,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:02,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:13:02,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:13:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:13:02,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:02,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:13:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:13:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:13:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:13:03,066 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:13:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:13:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:03,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:03,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:13:03,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:13:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:13:03,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:03,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:13:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:13:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:13:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:13:03,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710908157] [2020-10-14 09:13:03,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:13:03,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:13:03,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876037818] [2020-10-14 09:13:03,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:13:03,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:13:03,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:13:03,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:13:03,101 INFO L87 Difference]: Start difference. First operand 28442 states and 39767 transitions. Second operand 6 states. [2020-10-14 09:13:03,850 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-14 09:13:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:11,215 INFO L93 Difference]: Finished difference Result 61520 states and 87230 transitions. [2020-10-14 09:13:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:13:11,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 09:13:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:11,275 INFO L225 Difference]: With dead ends: 61520 [2020-10-14 09:13:11,275 INFO L226 Difference]: Without dead ends: 50482 [2020-10-14 09:13:11,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:13:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50482 states. [2020-10-14 09:13:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50482 to 28134. [2020-10-14 09:13:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28134 states. [2020-10-14 09:13:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28134 states to 28134 states and 39361 transitions. [2020-10-14 09:13:12,771 INFO L78 Accepts]: Start accepts. Automaton has 28134 states and 39361 transitions. Word has length 71 [2020-10-14 09:13:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:12,771 INFO L479 AbstractCegarLoop]: Abstraction has 28134 states and 39361 transitions. [2020-10-14 09:13:12,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:13:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 28134 states and 39361 transitions. [2020-10-14 09:13:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:13:12,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:12,782 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] [2020-10-14 09:13:12,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:13:12,782 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:12,783 INFO L82 PathProgramCache]: Analyzing trace with hash -761061984, now seen corresponding path program 1 times [2020-10-14 09:13:12,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:12,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799991082] [2020-10-14 09:13:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:12,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:13,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:17,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:17,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:13:17,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:13:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:13:17,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:17,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:13:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:13:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:13:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:18,451 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:13:18,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:13:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:18,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:18,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:18,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:13:18,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:13:18,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:13:18,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:18,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:18,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:13:18,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:13:18,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:13:18,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:13:18,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799991082] [2020-10-14 09:13:18,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:13:18,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:13:18,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851814889] [2020-10-14 09:13:18,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:13:18,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:13:18,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:13:18,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:13:18,486 INFO L87 Difference]: Start difference. First operand 28134 states and 39361 transitions. Second operand 6 states. [2020-10-14 09:13:19,136 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-14 09:13:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:36,537 INFO L93 Difference]: Finished difference Result 213606 states and 304911 transitions. [2020-10-14 09:13:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:13:36,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 09:13:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:36,825 INFO L225 Difference]: With dead ends: 213606 [2020-10-14 09:13:36,826 INFO L226 Difference]: Without dead ends: 190291 [2020-10-14 09:13:36,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:13:37,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190291 states. [2020-10-14 09:13:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190291 to 67916. [2020-10-14 09:13:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67916 states. [2020-10-14 09:13:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67916 states to 67916 states and 96263 transitions. [2020-10-14 09:13:41,642 INFO L78 Accepts]: Start accepts. Automaton has 67916 states and 96263 transitions. Word has length 71 [2020-10-14 09:13:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:41,642 INFO L479 AbstractCegarLoop]: Abstraction has 67916 states and 96263 transitions. [2020-10-14 09:13:41,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:13:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand 67916 states and 96263 transitions. [2020-10-14 09:13:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:13:41,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:41,665 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] [2020-10-14 09:13:41,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:13:41,665 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1509364698, now seen corresponding path program 1 times [2020-10-14 09:13:41,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:41,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763523873] [2020-10-14 09:13:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:41,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:41,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:43,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:46,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:46,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:13:46,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:13:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:13:46,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:46,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:13:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:13:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 09:13:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:47,387 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:13:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:13:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:47,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:47,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:13:47,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:13:47,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:13:47,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:47,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:13:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:13:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:13:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:13:47,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763523873] [2020-10-14 09:13:47,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:13:47,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:13:47,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078840681] [2020-10-14 09:13:47,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:13:47,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:13:47,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:13:47,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:13:47,449 INFO L87 Difference]: Start difference. First operand 67916 states and 96263 transitions. Second operand 6 states. [2020-10-14 09:13:48,126 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2020-10-14 09:13:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:53,736 INFO L93 Difference]: Finished difference Result 101865 states and 145710 transitions. [2020-10-14 09:13:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:13:53,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-14 09:13:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:53,792 INFO L225 Difference]: With dead ends: 101865 [2020-10-14 09:13:53,792 INFO L226 Difference]: Without dead ends: 49258 [2020-10-14 09:13:53,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:13:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49258 states. [2020-10-14 09:13:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49258 to 49136. [2020-10-14 09:13:56,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49136 states. [2020-10-14 09:13:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49136 states to 49136 states and 69780 transitions. [2020-10-14 09:13:56,836 INFO L78 Accepts]: Start accepts. Automaton has 49136 states and 69780 transitions. Word has length 72 [2020-10-14 09:13:56,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:56,837 INFO L479 AbstractCegarLoop]: Abstraction has 49136 states and 69780 transitions. [2020-10-14 09:13:56,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:13:56,837 INFO L276 IsEmpty]: Start isEmpty. Operand 49136 states and 69780 transitions. [2020-10-14 09:13:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:13:56,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:56,848 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] [2020-10-14 09:13:56,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:13:56,848 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:56,849 INFO L82 PathProgramCache]: Analyzing trace with hash -295223176, now seen corresponding path program 1 times [2020-10-14 09:13:56,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:56,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205116976] [2020-10-14 09:13:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:57,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:58,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:58,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:01,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:01,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:14:01,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:14:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:14:01,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:01,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:14:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:14:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:14:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:14:02,527 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:14:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:14:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:02,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:02,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:02,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:14:02,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:14:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:14:02,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:02,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:14:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:14:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:14:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:14:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:14:02,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205116976] [2020-10-14 09:14:02,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:14:02,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:14:02,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179461055] [2020-10-14 09:14:02,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:14:02,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:14:02,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:14:02,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:14:02,576 INFO L87 Difference]: Start difference. First operand 49136 states and 69780 transitions. Second operand 6 states. [2020-10-14 09:14:03,264 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:14:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:14:07,595 INFO L93 Difference]: Finished difference Result 69436 states and 99184 transitions. [2020-10-14 09:14:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:14:07,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-14 09:14:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:14:07,632 INFO L225 Difference]: With dead ends: 69436 [2020-10-14 09:14:07,632 INFO L226 Difference]: Without dead ends: 30700 [2020-10-14 09:14:07,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:14:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30700 states. [2020-10-14 09:14:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30700 to 30606. [2020-10-14 09:14:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30606 states. [2020-10-14 09:14:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30606 states to 30606 states and 43288 transitions. [2020-10-14 09:14:09,437 INFO L78 Accepts]: Start accepts. Automaton has 30606 states and 43288 transitions. Word has length 72 [2020-10-14 09:14:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:14:09,437 INFO L479 AbstractCegarLoop]: Abstraction has 30606 states and 43288 transitions. [2020-10-14 09:14:09,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:14:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 30606 states and 43288 transitions. [2020-10-14 09:14:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:14:09,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:09,443 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] [2020-10-14 09:14:09,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:14:09,443 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:09,444 INFO L82 PathProgramCache]: Analyzing trace with hash 834409277, now seen corresponding path program 1 times [2020-10-14 09:14:09,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:09,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075364248] [2020-10-14 09:14:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:11,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:12,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:14,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:14:14,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:14:15,227 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:14:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:14:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:15,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:15,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:14:15,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:14:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:14:15,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:15,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:14:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:14:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:14:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:14:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:14:15,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075364248] [2020-10-14 09:14:15,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:14:15,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:14:15,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964483738] [2020-10-14 09:14:15,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:14:15,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:14:15,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:14:15,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:14:15,259 INFO L87 Difference]: Start difference. First operand 30606 states and 43288 transitions. Second operand 6 states. [2020-10-14 09:14:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:14:25,374 INFO L93 Difference]: Finished difference Result 135493 states and 191513 transitions. [2020-10-14 09:14:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:14:25,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-14 09:14:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:14:25,539 INFO L225 Difference]: With dead ends: 135493 [2020-10-14 09:14:25,540 INFO L226 Difference]: Without dead ends: 107767 [2020-10-14 09:14:25,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:14:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107767 states. [2020-10-14 09:14:28,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107767 to 30354. [2020-10-14 09:14:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30354 states. [2020-10-14 09:14:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30354 states to 30354 states and 42586 transitions. [2020-10-14 09:14:28,364 INFO L78 Accepts]: Start accepts. Automaton has 30354 states and 42586 transitions. Word has length 72 [2020-10-14 09:14:28,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:14:28,364 INFO L479 AbstractCegarLoop]: Abstraction has 30354 states and 42586 transitions. [2020-10-14 09:14:28,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:14:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 30354 states and 42586 transitions. [2020-10-14 09:14:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:14:28,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:28,370 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] [2020-10-14 09:14:28,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:14:28,370 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:28,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1726468743, now seen corresponding path program 1 times [2020-10-14 09:14:28,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:28,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137691622] [2020-10-14 09:14:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking...