/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:40:50,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:40:50,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:40:50,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:40:50,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:40:50,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:40:50,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:40:50,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:40:50,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:40:50,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:40:50,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:40:50,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:40:50,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:40:50,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:40:50,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:40:50,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:40:50,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:40:50,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:40:50,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:40:50,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:40:50,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:40:50,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:40:50,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:40:50,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:40:50,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:40:50,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:40:50,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:40:50,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:40:50,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:40:50,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:40:50,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:40:50,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:40:50,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:40:50,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:40:50,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:40:50,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:40:50,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:40:50,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:40:50,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:40:50,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:40:50,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:40:50,521 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 [2020-10-12 19:40:50,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:40:50,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:40:50,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:40:50,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:40:50,546 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:40:50,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:40:50,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:40:50,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:40:50,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:40:50,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:40:50,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:40:50,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:40:50,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:40:50,548 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:40:50,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:40:50,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:40:50,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:40:50,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:40:50,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:40:50,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:40:50,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:40:50,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:40:50,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:40:50,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:40:50,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:40:50,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:40:50,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:40:50,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:40:50,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:40:50,551 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:40:50,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:40:50,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:40:50,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:40:50,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:40:50,882 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:40:50,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-12 19:40:50,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b538f5791/fa54dce27b424826a373e1a0ecd931b9/FLAG80ed6c639 [2020-10-12 19:40:51,563 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:40:51,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-12 19:40:51,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b538f5791/fa54dce27b424826a373e1a0ecd931b9/FLAG80ed6c639 [2020-10-12 19:40:51,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b538f5791/fa54dce27b424826a373e1a0ecd931b9 [2020-10-12 19:40:51,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:40:51,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:40:51,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:40:51,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:40:51,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:40:51,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:40:51" (1/1) ... [2020-10-12 19:40:51,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e60d8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:51, skipping insertion in model container [2020-10-12 19:40:51,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:40:51" (1/1) ... [2020-10-12 19:40:51,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:40:51,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:40:52,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:40:52,375 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:40:52,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:40:52,617 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:40:52,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52 WrapperNode [2020-10-12 19:40:52,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:40:52,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:40:52,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:40:52,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:40:52,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (1/1) ... [2020-10-12 19:40:52,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (1/1) ... [2020-10-12 19:40:52,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (1/1) ... [2020-10-12 19:40:52,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (1/1) ... [2020-10-12 19:40:52,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (1/1) ... [2020-10-12 19:40:52,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (1/1) ... [2020-10-12 19:40:52,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (1/1) ... [2020-10-12 19:40:52,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:40:52,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:40:52,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:40:52,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:40:52,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (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 [2020-10-12 19:40:52,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:40:52,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:40:52,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:40:52,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:40:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:40:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:40:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:40:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:40:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:40:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:40:52,858 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:40:52,858 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:40:52,858 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:40:52,858 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:40:52,858 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:40:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:40:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:40:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:40:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:40:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:40:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:40:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:40:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:40:54,353 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:40:54,354 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:40:54,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:40:54 BoogieIcfgContainer [2020-10-12 19:40:54,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:40:54,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:40:54,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:40:54,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:40:54,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:40:51" (1/3) ... [2020-10-12 19:40:54,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7f348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:40:54, skipping insertion in model container [2020-10-12 19:40:54,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:52" (2/3) ... [2020-10-12 19:40:54,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7f348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:40:54, skipping insertion in model container [2020-10-12 19:40:54,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:40:54" (3/3) ... [2020-10-12 19:40:54,371 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-12 19:40:54,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:40:54,391 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:40:54,406 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:40:54,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:40:54,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:40:54,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:40:54,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:40:54,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:40:54,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:40:54,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:40:54,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:40:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states. [2020-10-12 19:40:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 19:40:54,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:54,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:40:54,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:54,490 INFO L82 PathProgramCache]: Analyzing trace with hash -339565854, now seen corresponding path program 1 times [2020-10-12 19:40:54,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:54,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624112612] [2020-10-12 19:40:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:59,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:59,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 19:40:59,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:40:59,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 19:40:59,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:40:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:40:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:40:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 19:41:00,382 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:41:00,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:00,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:00,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:00,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:00,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:00,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:41:00,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:00,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624112612] [2020-10-12 19:41:00,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:00,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:41:00,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488308908] [2020-10-12 19:41:00,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:41:00,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:00,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:41:00,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:41:00,478 INFO L87 Difference]: Start difference. First operand 395 states. Second operand 5 states. [2020-10-12 19:41:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:02,344 INFO L93 Difference]: Finished difference Result 748 states and 1218 transitions. [2020-10-12 19:41:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:41:02,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 19:41:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:02,377 INFO L225 Difference]: With dead ends: 748 [2020-10-12 19:41:02,377 INFO L226 Difference]: Without dead ends: 391 [2020-10-12 19:41:02,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:41:02,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-12 19:41:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-12 19:41:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-12 19:41:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 596 transitions. [2020-10-12 19:41:02,483 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 596 transitions. Word has length 151 [2020-10-12 19:41:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:02,484 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 596 transitions. [2020-10-12 19:41:02,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:41:02,484 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 596 transitions. [2020-10-12 19:41:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-12 19:41:02,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:02,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:02,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:41:02,491 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:02,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:02,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1766241270, now seen corresponding path program 1 times [2020-10-12 19:41:02,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:02,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885760564] [2020-10-12 19:41:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:02,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:04,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:04,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:07,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:07,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 19:41:07,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:41:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 19:41:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 19:41:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:07,920 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:41:07,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:07,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:07,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:07,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:07,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:41:07,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:08,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885760564] [2020-10-12 19:41:08,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:08,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:08,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282787444] [2020-10-12 19:41:08,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:08,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:08,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:08,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:08,027 INFO L87 Difference]: Start difference. First operand 391 states and 596 transitions. Second operand 9 states. [2020-10-12 19:41:08,478 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:41:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:17,951 INFO L93 Difference]: Finished difference Result 3917 states and 6220 transitions. [2020-10-12 19:41:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:17,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2020-10-12 19:41:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:17,972 INFO L225 Difference]: With dead ends: 3917 [2020-10-12 19:41:17,973 INFO L226 Difference]: Without dead ends: 3640 [2020-10-12 19:41:17,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:17,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2020-10-12 19:41:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 723. [2020-10-12 19:41:18,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-10-12 19:41:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1118 transitions. [2020-10-12 19:41:18,057 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1118 transitions. Word has length 190 [2020-10-12 19:41:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:18,058 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 1118 transitions. [2020-10-12 19:41:18,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1118 transitions. [2020-10-12 19:41:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 19:41:18,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:18,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:18,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:41:18,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:18,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:18,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1231672441, now seen corresponding path program 1 times [2020-10-12 19:41:18,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:18,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423410936] [2020-10-12 19:41:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:18,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:23,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:23,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-12 19:41:23,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:41:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 19:41:23,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:41:23,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:23,449 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:41:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:23,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:23,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:23,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:41:23,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:23,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:23,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:23,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423410936] [2020-10-12 19:41:23,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:23,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:23,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590061805] [2020-10-12 19:41:23,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:23,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:23,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:23,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:23,601 INFO L87 Difference]: Start difference. First operand 723 states and 1118 transitions. Second operand 9 states. [2020-10-12 19:41:23,958 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:41:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:32,462 INFO L93 Difference]: Finished difference Result 5419 states and 8532 transitions. [2020-10-12 19:41:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:32,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2020-10-12 19:41:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:32,491 INFO L225 Difference]: With dead ends: 5419 [2020-10-12 19:41:32,495 INFO L226 Difference]: Without dead ends: 4933 [2020-10-12 19:41:32,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:32,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4933 states. [2020-10-12 19:41:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4933 to 1571. [2020-10-12 19:41:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-10-12 19:41:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2452 transitions. [2020-10-12 19:41:32,619 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2452 transitions. Word has length 192 [2020-10-12 19:41:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:32,622 INFO L479 AbstractCegarLoop]: Abstraction has 1571 states and 2452 transitions. [2020-10-12 19:41:32,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:32,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2452 transitions. [2020-10-12 19:41:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 19:41:32,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:32,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:32,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:41:32,628 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:32,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2005585651, now seen corresponding path program 1 times [2020-10-12 19:41:32,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:32,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149959196] [2020-10-12 19:41:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:32,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:32,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:37,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-12 19:41:37,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:41:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 19:41:37,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:41:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:38,004 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:41:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:38,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:38,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:38,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:41:38,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:38,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:38,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149959196] [2020-10-12 19:41:38,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:38,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:38,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550634589] [2020-10-12 19:41:38,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:38,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:38,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:38,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:38,093 INFO L87 Difference]: Start difference. First operand 1571 states and 2452 transitions. Second operand 9 states. [2020-10-12 19:41:38,375 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:41:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:44,937 INFO L93 Difference]: Finished difference Result 6694 states and 10509 transitions. [2020-10-12 19:41:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:44,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2020-10-12 19:41:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:44,965 INFO L225 Difference]: With dead ends: 6694 [2020-10-12 19:41:44,965 INFO L226 Difference]: Without dead ends: 6013 [2020-10-12 19:41:44,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6013 states. [2020-10-12 19:41:45,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6013 to 2427. [2020-10-12 19:41:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2020-10-12 19:41:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3801 transitions. [2020-10-12 19:41:45,157 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3801 transitions. Word has length 192 [2020-10-12 19:41:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:45,158 INFO L479 AbstractCegarLoop]: Abstraction has 2427 states and 3801 transitions. [2020-10-12 19:41:45,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3801 transitions. [2020-10-12 19:41:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 19:41:45,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:45,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:45,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:41:45,166 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:45,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1285714413, now seen corresponding path program 1 times [2020-10-12 19:41:45,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:45,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836580981] [2020-10-12 19:41:45,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:45,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:50,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:50,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:50,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-12 19:41:50,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:41:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:41:50,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:41:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:50,480 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:41:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:50,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:50,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:50,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:41:50,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:50,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836580981] [2020-10-12 19:41:50,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:50,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:50,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741359399] [2020-10-12 19:41:50,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:50,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:50,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:50,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:50,564 INFO L87 Difference]: Start difference. First operand 2427 states and 3801 transitions. Second operand 9 states. [2020-10-12 19:41:50,829 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:41:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:55,045 INFO L93 Difference]: Finished difference Result 7315 states and 11483 transitions. [2020-10-12 19:41:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:55,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2020-10-12 19:41:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:55,075 INFO L225 Difference]: With dead ends: 7315 [2020-10-12 19:41:55,076 INFO L226 Difference]: Without dead ends: 6634 [2020-10-12 19:41:55,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2020-10-12 19:41:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 2996. [2020-10-12 19:41:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2996 states. [2020-10-12 19:41:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4699 transitions. [2020-10-12 19:41:55,338 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4699 transitions. Word has length 192 [2020-10-12 19:41:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:55,340 INFO L479 AbstractCegarLoop]: Abstraction has 2996 states and 4699 transitions. [2020-10-12 19:41:55,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4699 transitions. [2020-10-12 19:41:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 19:41:55,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:55,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:55,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:41:55,351 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:55,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1842527591, now seen corresponding path program 1 times [2020-10-12 19:41:55,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:55,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014375937] [2020-10-12 19:41:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:55,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:56,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:00,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:00,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-12 19:42:00,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:42:00,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:42:00,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:42:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:42:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:42:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:42:00,703 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:42:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:00,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:00,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:00,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:42:00,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:00,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014375937] [2020-10-12 19:42:00,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:00,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:42:00,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14406263] [2020-10-12 19:42:00,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:42:00,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:00,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:42:00,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:42:00,783 INFO L87 Difference]: Start difference. First operand 2996 states and 4699 transitions. Second operand 9 states. [2020-10-12 19:42:01,041 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:42:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:09,797 INFO L93 Difference]: Finished difference Result 7886 states and 12377 transitions. [2020-10-12 19:42:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:42:09,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2020-10-12 19:42:09,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:09,827 INFO L225 Difference]: With dead ends: 7886 [2020-10-12 19:42:09,828 INFO L226 Difference]: Without dead ends: 7205 [2020-10-12 19:42:09,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:42:09,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7205 states. [2020-10-12 19:42:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7205 to 3555. [2020-10-12 19:42:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3555 states. [2020-10-12 19:42:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 5581 transitions. [2020-10-12 19:42:10,137 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 5581 transitions. Word has length 192 [2020-10-12 19:42:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:10,137 INFO L479 AbstractCegarLoop]: Abstraction has 3555 states and 5581 transitions. [2020-10-12 19:42:10,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:42:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 5581 transitions. [2020-10-12 19:42:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 19:42:10,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:10,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:10,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:42:10,147 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:10,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1627226751, now seen corresponding path program 1 times [2020-10-12 19:42:10,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:10,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416262314] [2020-10-12 19:42:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:15,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:15,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-12 19:42:15,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:42:15,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:42:15,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:15,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:42:15,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:42:15,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:42:15,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:15,475 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:42:15,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:15,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:15,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:15,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:15,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:15,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:42:15,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:15,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:15,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416262314] [2020-10-12 19:42:15,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:15,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:42:15,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329823357] [2020-10-12 19:42:15,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:42:15,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:15,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:42:15,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:42:15,521 INFO L87 Difference]: Start difference. First operand 3555 states and 5581 transitions. Second operand 9 states. [2020-10-12 19:42:15,799 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:42:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:25,859 INFO L93 Difference]: Finished difference Result 8647 states and 13575 transitions. [2020-10-12 19:42:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:42:25,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2020-10-12 19:42:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:25,879 INFO L225 Difference]: With dead ends: 8647 [2020-10-12 19:42:25,879 INFO L226 Difference]: Without dead ends: 7966 [2020-10-12 19:42:25,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:42:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7966 states. [2020-10-12 19:42:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7966 to 4154. [2020-10-12 19:42:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4154 states. [2020-10-12 19:42:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 6527 transitions. [2020-10-12 19:42:26,208 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 6527 transitions. Word has length 192 [2020-10-12 19:42:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:26,208 INFO L479 AbstractCegarLoop]: Abstraction has 4154 states and 6527 transitions. [2020-10-12 19:42:26,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:42:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 6527 transitions. [2020-10-12 19:42:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 19:42:26,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:26,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:26,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:42:26,220 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:26,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:26,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1088674053, now seen corresponding path program 1 times [2020-10-12 19:42:26,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:26,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985368219] [2020-10-12 19:42:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:31,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:31,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-12 19:42:31,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:42:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:42:31,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:42:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:42:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:42:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:31,548 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:42:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:31,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:31,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:31,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:31,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:42:31,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:31,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:31,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:31,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:31,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985368219] [2020-10-12 19:42:31,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:31,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:42:31,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443075808] [2020-10-12 19:42:31,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:42:31,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:31,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:42:31,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:42:31,596 INFO L87 Difference]: Start difference. First operand 4154 states and 6527 transitions. Second operand 9 states. [2020-10-12 19:42:31,873 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:42:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:40,680 INFO L93 Difference]: Finished difference Result 9458 states and 14853 transitions. [2020-10-12 19:42:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:42:40,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2020-10-12 19:42:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:40,700 INFO L225 Difference]: With dead ends: 9458 [2020-10-12 19:42:40,701 INFO L226 Difference]: Without dead ends: 8777 [2020-10-12 19:42:40,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:42:40,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8777 states. [2020-10-12 19:42:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8777 to 4753. [2020-10-12 19:42:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4753 states. [2020-10-12 19:42:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 7473 transitions. [2020-10-12 19:42:41,199 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 7473 transitions. Word has length 192 [2020-10-12 19:42:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:41,199 INFO L479 AbstractCegarLoop]: Abstraction has 4753 states and 7473 transitions. [2020-10-12 19:42:41,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:42:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 7473 transitions. [2020-10-12 19:42:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 19:42:41,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:41,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:41,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:42:41,210 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:41,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash -613950794, now seen corresponding path program 1 times [2020-10-12 19:42:41,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:41,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349749594] [2020-10-12 19:42:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:41,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:46,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 19:42:46,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:42:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:42:46,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:42:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:42:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:46,581 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:42:46,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:46,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:46,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:42:46,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:42:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:42:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:46,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349749594] [2020-10-12 19:42:46,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:46,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:42:46,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349701556] [2020-10-12 19:42:46,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:46,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:46,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:46,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:46,649 INFO L87 Difference]: Start difference. First operand 4753 states and 7473 transitions. Second operand 7 states. [2020-10-12 19:42:46,886 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:42:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:49,410 INFO L93 Difference]: Finished difference Result 7338 states and 11542 transitions. [2020-10-12 19:42:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:42:49,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-12 19:42:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:49,423 INFO L225 Difference]: With dead ends: 7338 [2020-10-12 19:42:49,423 INFO L226 Difference]: Without dead ends: 5919 [2020-10-12 19:42:49,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:42:49,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2020-10-12 19:42:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 4617. [2020-10-12 19:42:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2020-10-12 19:42:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7253 transitions. [2020-10-12 19:42:49,970 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7253 transitions. Word has length 194 [2020-10-12 19:42:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:49,970 INFO L479 AbstractCegarLoop]: Abstraction has 4617 states and 7253 transitions. [2020-10-12 19:42:49,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7253 transitions. [2020-10-12 19:42:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 19:42:49,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:49,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:49,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:42:49,981 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:49,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1333822032, now seen corresponding path program 1 times [2020-10-12 19:42:49,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:49,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940437271] [2020-10-12 19:42:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:50,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:50,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:55,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:55,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 19:42:55,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:42:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:42:55,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:42:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 19:42:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:42:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:55,312 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:42:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:55,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:55,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:55,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:42:55,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:55,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940437271] [2020-10-12 19:42:55,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:55,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:42:55,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869796803] [2020-10-12 19:42:55,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:42:55,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:55,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:42:55,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:42:55,374 INFO L87 Difference]: Start difference. First operand 4617 states and 7253 transitions. Second operand 5 states. [2020-10-12 19:42:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:57,321 INFO L93 Difference]: Finished difference Result 8885 states and 13984 transitions. [2020-10-12 19:42:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:42:57,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-12 19:42:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:57,335 INFO L225 Difference]: With dead ends: 8885 [2020-10-12 19:42:57,335 INFO L226 Difference]: Without dead ends: 4599 [2020-10-12 19:42:57,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:42:57,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2020-10-12 19:42:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4599. [2020-10-12 19:42:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4599 states. [2020-10-12 19:42:57,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 7208 transitions. [2020-10-12 19:42:57,844 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 7208 transitions. Word has length 194 [2020-10-12 19:42:57,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:57,845 INFO L479 AbstractCegarLoop]: Abstraction has 4599 states and 7208 transitions. [2020-10-12 19:42:57,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:42:57,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 7208 transitions. [2020-10-12 19:42:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:42:57,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:57,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:57,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:42:57,856 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:57,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1052442927, now seen corresponding path program 1 times [2020-10-12 19:42:57,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:57,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372396596] [2020-10-12 19:42:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:57,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:02,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 19:43:02,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:43:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:43:02,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:43:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:43:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 19:43:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:03,222 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:43:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:03,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:03,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:03,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:43:03,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:03,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:43:03,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:03,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:43:03,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:03,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372396596] [2020-10-12 19:43:03,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:03,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:43:03,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224695353] [2020-10-12 19:43:03,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:43:03,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:03,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:43:03,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:43:03,303 INFO L87 Difference]: Start difference. First operand 4599 states and 7208 transitions. Second operand 7 states. [2020-10-12 19:43:03,536 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:43:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:06,149 INFO L93 Difference]: Finished difference Result 10828 states and 17021 transitions. [2020-10-12 19:43:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:43:06,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-12 19:43:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:06,161 INFO L225 Difference]: With dead ends: 10828 [2020-10-12 19:43:06,161 INFO L226 Difference]: Without dead ends: 6338 [2020-10-12 19:43:06,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:43:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2020-10-12 19:43:06,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 4456. [2020-10-12 19:43:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4456 states. [2020-10-12 19:43:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6978 transitions. [2020-10-12 19:43:06,659 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6978 transitions. Word has length 196 [2020-10-12 19:43:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:06,659 INFO L479 AbstractCegarLoop]: Abstraction has 4456 states and 6978 transitions. [2020-10-12 19:43:06,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:43:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6978 transitions. [2020-10-12 19:43:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:43:06,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:06,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:06,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:43:06,666 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:06,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash 323600965, now seen corresponding path program 1 times [2020-10-12 19:43:06,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:06,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882872887] [2020-10-12 19:43:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:07,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:11,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 19:43:11,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:43:11,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:43:11,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:11,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:43:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:43:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:43:11,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:11,992 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:43:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:12,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:12,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:12,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:12,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:43:12,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:43:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:43:12,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:12,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882872887] [2020-10-12 19:43:12,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:12,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:43:12,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110966841] [2020-10-12 19:43:12,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:43:12,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:12,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:43:12,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:43:12,059 INFO L87 Difference]: Start difference. First operand 4456 states and 6978 transitions. Second operand 7 states. [2020-10-12 19:43:12,288 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:43:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:14,724 INFO L93 Difference]: Finished difference Result 9248 states and 14502 transitions. [2020-10-12 19:43:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:43:14,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-12 19:43:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:14,733 INFO L225 Difference]: With dead ends: 9248 [2020-10-12 19:43:14,733 INFO L226 Difference]: Without dead ends: 4973 [2020-10-12 19:43:14,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:43:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4973 states. [2020-10-12 19:43:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4973 to 4313. [2020-10-12 19:43:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4313 states. [2020-10-12 19:43:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 6747 transitions. [2020-10-12 19:43:15,116 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 6747 transitions. Word has length 196 [2020-10-12 19:43:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:15,116 INFO L479 AbstractCegarLoop]: Abstraction has 4313 states and 6747 transitions. [2020-10-12 19:43:15,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:43:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 6747 transitions. [2020-10-12 19:43:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:43:15,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:15,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:15,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:43:15,122 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1772811811, now seen corresponding path program 1 times [2020-10-12 19:43:15,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:15,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319819192] [2020-10-12 19:43:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:17,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:17,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:20,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 19:43:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:43:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:43:20,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:20,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:43:20,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 19:43:20,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:43:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:20,424 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:43:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:20,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:20,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:20,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:20,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:43:20,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:20,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:20,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319819192] [2020-10-12 19:43:20,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:20,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:43:20,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891472479] [2020-10-12 19:43:20,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:43:20,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:20,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:43:20,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:43:20,488 INFO L87 Difference]: Start difference. First operand 4313 states and 6747 transitions. Second operand 9 states. [2020-10-12 19:43:25,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:25,336 INFO L93 Difference]: Finished difference Result 19545 states and 30543 transitions. [2020-10-12 19:43:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:43:25,342 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2020-10-12 19:43:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:25,358 INFO L225 Difference]: With dead ends: 19545 [2020-10-12 19:43:25,358 INFO L226 Difference]: Without dead ends: 18915 [2020-10-12 19:43:25,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:43:25,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18915 states. [2020-10-12 19:43:25,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18915 to 4820. [2020-10-12 19:43:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4820 states. [2020-10-12 19:43:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 7535 transitions. [2020-10-12 19:43:25,853 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 7535 transitions. Word has length 196 [2020-10-12 19:43:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:25,853 INFO L479 AbstractCegarLoop]: Abstraction has 4820 states and 7535 transitions. [2020-10-12 19:43:25,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:43:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 7535 transitions. [2020-10-12 19:43:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:43:25,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:25,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:25,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:43:25,860 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:25,860 INFO L82 PathProgramCache]: Analyzing trace with hash 447564375, now seen corresponding path program 1 times [2020-10-12 19:43:25,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:25,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090900350] [2020-10-12 19:43:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:25,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:25,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:28,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:30,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:30,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 19:43:30,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:43:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:43:30,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:43:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:43:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:43:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:31,159 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:43:31,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:31,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:31,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:31,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:43:31,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:43:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:43:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:31,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090900350] [2020-10-12 19:43:31,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:31,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:43:31,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396896557] [2020-10-12 19:43:31,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:43:31,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:31,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:43:31,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:43:31,210 INFO L87 Difference]: Start difference. First operand 4820 states and 7535 transitions. Second operand 8 states. [2020-10-12 19:43:31,460 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:43:35,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:35,966 INFO L93 Difference]: Finished difference Result 15789 states and 24766 transitions. [2020-10-12 19:43:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:43:35,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-12 19:43:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:35,980 INFO L225 Difference]: With dead ends: 15789 [2020-10-12 19:43:35,980 INFO L226 Difference]: Without dead ends: 14694 [2020-10-12 19:43:35,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:43:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14694 states. [2020-10-12 19:43:36,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14694 to 4824. [2020-10-12 19:43:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4824 states. [2020-10-12 19:43:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 7530 transitions. [2020-10-12 19:43:36,548 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 7530 transitions. Word has length 196 [2020-10-12 19:43:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:36,548 INFO L479 AbstractCegarLoop]: Abstraction has 4824 states and 7530 transitions. [2020-10-12 19:43:36,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:43:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 7530 transitions. [2020-10-12 19:43:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:43:36,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:36,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:36,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:43:36,555 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:36,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1218442287, now seen corresponding path program 1 times [2020-10-12 19:43:36,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:36,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997974590] [2020-10-12 19:43:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:38,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:38,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:41,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:41,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 19:43:41,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:43:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:43:41,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:43:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:43:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:43:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:41,925 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:43:41,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:41,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:41,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:41,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:43:41,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:43:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:43:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:42,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997974590] [2020-10-12 19:43:42,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:42,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:43:42,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035896618] [2020-10-12 19:43:42,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:43:42,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:42,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:43:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:43:42,002 INFO L87 Difference]: Start difference. First operand 4824 states and 7530 transitions. Second operand 8 states. [2020-10-12 19:43:42,237 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:43:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:47,263 INFO L93 Difference]: Finished difference Result 24175 states and 37793 transitions. [2020-10-12 19:43:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:43:47,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-12 19:43:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:47,282 INFO L225 Difference]: With dead ends: 24175 [2020-10-12 19:43:47,283 INFO L226 Difference]: Without dead ends: 19528 [2020-10-12 19:43:47,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:43:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19528 states. [2020-10-12 19:43:48,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19528 to 5858. [2020-10-12 19:43:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5858 states. [2020-10-12 19:43:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 9035 transitions. [2020-10-12 19:43:48,092 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 9035 transitions. Word has length 196 [2020-10-12 19:43:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:48,092 INFO L479 AbstractCegarLoop]: Abstraction has 5858 states and 9035 transitions. [2020-10-12 19:43:48,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:43:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 9035 transitions. [2020-10-12 19:43:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:43:48,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:48,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:48,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:43:48,100 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:48,100 INFO L82 PathProgramCache]: Analyzing trace with hash -26226339, now seen corresponding path program 1 times [2020-10-12 19:43:48,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:48,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863043494] [2020-10-12 19:43:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:52,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:53,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 19:43:53,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:43:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:43:53,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:43:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:43:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 19:43:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:53,497 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:43:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:53,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:43:53,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:43:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:43:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:53,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863043494] [2020-10-12 19:43:53,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:53,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:43:53,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120699241] [2020-10-12 19:43:53,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:43:53,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:53,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:43:53,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:43:53,580 INFO L87 Difference]: Start difference. First operand 5858 states and 9035 transitions. Second operand 8 states. [2020-10-12 19:43:53,803 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:44:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:00,257 INFO L93 Difference]: Finished difference Result 32467 states and 50225 transitions. [2020-10-12 19:44:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:44:00,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-12 19:44:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:00,281 INFO L225 Difference]: With dead ends: 32467 [2020-10-12 19:44:00,282 INFO L226 Difference]: Without dead ends: 27066 [2020-10-12 19:44:00,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:44:00,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27066 states. [2020-10-12 19:44:01,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27066 to 6934. [2020-10-12 19:44:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6934 states. [2020-10-12 19:44:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 10495 transitions. [2020-10-12 19:44:01,149 INFO L78 Accepts]: Start accepts. Automaton has 6934 states and 10495 transitions. Word has length 196 [2020-10-12 19:44:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:01,149 INFO L479 AbstractCegarLoop]: Abstraction has 6934 states and 10495 transitions. [2020-10-12 19:44:01,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:44:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 6934 states and 10495 transitions. [2020-10-12 19:44:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:44:01,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:01,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:44:01,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:44:01,158 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:01,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1281728739, now seen corresponding path program 1 times [2020-10-12 19:44:01,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:01,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512745578] [2020-10-12 19:44:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:02,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:05,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:05,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:06,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:06,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 19:44:06,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:44:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-12 19:44:06,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:44:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:44:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 19:44:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:06,630 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:44:06,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:06,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:06,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:06,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:06,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:44:06,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:44:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:44:06,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:06,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512745578] [2020-10-12 19:44:06,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:06,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:44:06,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506106797] [2020-10-12 19:44:06,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:44:06,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:06,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:44:06,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:44:06,706 INFO L87 Difference]: Start difference. First operand 6934 states and 10495 transitions. Second operand 8 states. [2020-10-12 19:44:06,938 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:44:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:14,623 INFO L93 Difference]: Finished difference Result 39157 states and 59596 transitions. [2020-10-12 19:44:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:44:14,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-12 19:44:14,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:14,652 INFO L225 Difference]: With dead ends: 39157 [2020-10-12 19:44:14,652 INFO L226 Difference]: Without dead ends: 32907 [2020-10-12 19:44:14,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:44:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32907 states. [2020-10-12 19:44:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32907 to 8041. [2020-10-12 19:44:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8041 states. [2020-10-12 19:44:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8041 states to 8041 states and 11883 transitions. [2020-10-12 19:44:16,632 INFO L78 Accepts]: Start accepts. Automaton has 8041 states and 11883 transitions. Word has length 196 [2020-10-12 19:44:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:16,633 INFO L479 AbstractCegarLoop]: Abstraction has 8041 states and 11883 transitions. [2020-10-12 19:44:16,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:44:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8041 states and 11883 transitions. [2020-10-12 19:44:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:44:16,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:16,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:44:16,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:44:16,644 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:16,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash 707573993, now seen corresponding path program 1 times [2020-10-12 19:44:16,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:16,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130225351] [2020-10-12 19:44:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:20,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:20,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:21,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 19:44:21,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:44:21,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:44:21,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:44:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:44:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 19:44:21,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:22,025 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:44:22,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:22,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:22,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:22,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:44:22,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:44:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:44:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:22,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130225351] [2020-10-12 19:44:22,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:22,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:44:22,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272370037] [2020-10-12 19:44:22,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:44:22,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:22,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:44:22,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:44:22,099 INFO L87 Difference]: Start difference. First operand 8041 states and 11883 transitions. Second operand 8 states. [2020-10-12 19:44:22,328 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:44:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:28,296 INFO L93 Difference]: Finished difference Result 27525 states and 40908 transitions. [2020-10-12 19:44:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:44:28,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-12 19:44:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:28,319 INFO L225 Difference]: With dead ends: 27525 [2020-10-12 19:44:28,319 INFO L226 Difference]: Without dead ends: 21028 [2020-10-12 19:44:28,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:44:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21028 states. [2020-10-12 19:44:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21028 to 8389. [2020-10-12 19:44:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8389 states. [2020-10-12 19:44:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8389 states to 8389 states and 12078 transitions. [2020-10-12 19:44:29,595 INFO L78 Accepts]: Start accepts. Automaton has 8389 states and 12078 transitions. Word has length 196 [2020-10-12 19:44:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:29,596 INFO L479 AbstractCegarLoop]: Abstraction has 8389 states and 12078 transitions. [2020-10-12 19:44:29,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:44:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8389 states and 12078 transitions. [2020-10-12 19:44:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 19:44:29,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:29,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:44:29,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:44:29,604 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:29,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1267159627, now seen corresponding path program 1 times [2020-10-12 19:44:29,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:29,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768119826] [2020-10-12 19:44:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:29,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking...