/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:25:27,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:25:27,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:25:27,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:25:27,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:25:27,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:25:27,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:25:27,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:25:27,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:25:27,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:25:27,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:25:27,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:25:27,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:25:27,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:25:27,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:25:27,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:25:27,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:25:27,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:25:27,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:25:27,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:25:27,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:25:27,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:25:27,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:25:27,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:25:27,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:25:27,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:25:27,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:25:27,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:25:27,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:25:27,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:25:27,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:25:27,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:25:27,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:25:27,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:25:27,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:25:27,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:25:27,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:25:27,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:25:27,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:25:27,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:25:27,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:25:27,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:25:27,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:25:27,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:25:27,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:25:27,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:25:27,542 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:25:27,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:25:27,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:25:27,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:25:27,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:25:27,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:25:27,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:25:27,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:25:27,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:25:27,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:25:27,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:25:27,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:25:27,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:25:27,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:25:27,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:25:27,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:25:27,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:25:27,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:25:27,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:25:27,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:25:27,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:25:27,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:25:27,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:25:27,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:25:27,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:25:27,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:25:27,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:25:27,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:25:27,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:25:27,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:25:27,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:25:27,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:25:27,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c902bea84/9d68bb86d4804ffab131dd875ab5638a/FLAGd83b32516 [2020-10-14 09:25:28,549 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:25:28,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:25:28,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c902bea84/9d68bb86d4804ffab131dd875ab5638a/FLAGd83b32516 [2020-10-14 09:25:28,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c902bea84/9d68bb86d4804ffab131dd875ab5638a [2020-10-14 09:25:28,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:25:28,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:25:28,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:25:28,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:25:28,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:25:28,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:25:28" (1/1) ... [2020-10-14 09:25:28,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3451cfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:28, skipping insertion in model container [2020-10-14 09:25:28,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:25:28" (1/1) ... [2020-10-14 09:25:28,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:25:28,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:25:29,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:25:29,539 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:25:30,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:25:30,064 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:25:30,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30 WrapperNode [2020-10-14 09:25:30,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:25:30,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:25:30,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:25:30,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:25:30,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (1/1) ... [2020-10-14 09:25:30,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (1/1) ... [2020-10-14 09:25:30,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (1/1) ... [2020-10-14 09:25:30,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (1/1) ... [2020-10-14 09:25:30,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (1/1) ... [2020-10-14 09:25:30,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (1/1) ... [2020-10-14 09:25:30,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (1/1) ... [2020-10-14 09:25:30,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:25:30,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:25:30,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:25:30,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:25:30,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:25:30,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:25:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:25:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:25:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:25:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:25:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:25:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:25:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:25:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:25:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:25:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:25:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:25:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:25:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:25:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:25:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:25:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:25:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:25:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:25:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:25:31,738 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:25:31,738 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:25:31,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:25:31 BoogieIcfgContainer [2020-10-14 09:25:31,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:25:31,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:25:31,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:25:31,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:25:31,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:25:28" (1/3) ... [2020-10-14 09:25:31,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d58b369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:25:31, skipping insertion in model container [2020-10-14 09:25:31,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:30" (2/3) ... [2020-10-14 09:25:31,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d58b369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:25:31, skipping insertion in model container [2020-10-14 09:25:31,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:25:31" (3/3) ... [2020-10-14 09:25:31,756 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:25:31,767 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:25:31,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-14 09:25:31,792 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-14 09:25:31,821 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:25:31,821 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:25:31,821 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:25:31,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:25:31,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:25:31,822 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:25:31,822 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:25:31,822 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:25:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states. [2020-10-14 09:25:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:25:31,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:31,872 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] [2020-10-14 09:25:31,907 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:31,914 INFO L82 PathProgramCache]: Analyzing trace with hash -635063315, now seen corresponding path program 1 times [2020-10-14 09:25:31,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:31,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960583047] [2020-10-14 09:25:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:35,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:25:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:25:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 09:25:37,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:37,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:25:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 09:25:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 09:25:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:25:38,005 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:25:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:38,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:38,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:38,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:38,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:38,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:25:38,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:38,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:25:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:25:38,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960583047] [2020-10-14 09:25:38,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:38,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:25:38,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999021703] [2020-10-14 09:25:38,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:25:38,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:25:38,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:25:38,153 INFO L87 Difference]: Start difference. First operand 418 states. Second operand 4 states. [2020-10-14 09:25:38,567 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-14 09:25:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:41,033 INFO L93 Difference]: Finished difference Result 749 states and 1307 transitions. [2020-10-14 09:25:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:25:41,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 09:25:41,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:41,072 INFO L225 Difference]: With dead ends: 749 [2020-10-14 09:25:41,073 INFO L226 Difference]: Without dead ends: 599 [2020-10-14 09:25:41,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:25:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-14 09:25:41,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-10-14 09:25:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-14 09:25:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 876 transitions. [2020-10-14 09:25:41,209 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 876 transitions. Word has length 152 [2020-10-14 09:25:41,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:41,213 INFO L479 AbstractCegarLoop]: Abstraction has 597 states and 876 transitions. [2020-10-14 09:25:41,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:25:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 876 transitions. [2020-10-14 09:25:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:25:41,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:41,230 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] [2020-10-14 09:25:41,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:25:41,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:41,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1576124083, now seen corresponding path program 1 times [2020-10-14 09:25:41,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:41,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381121117] [2020-10-14 09:25:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:41,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:41,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:42,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:42,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:46,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:25:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:25:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:25:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:46,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:25:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:25:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:25:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:46,704 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:25:46,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:46,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:46,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:46,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:46,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 09:25:46,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:46,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:46,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:25:46,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381121117] [2020-10-14 09:25:46,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:46,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:25:46,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709221211] [2020-10-14 09:25:46,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:25:46,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:46,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:25:46,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:25:46,834 INFO L87 Difference]: Start difference. First operand 597 states and 876 transitions. Second operand 5 states. [2020-10-14 09:25:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:49,934 INFO L93 Difference]: Finished difference Result 1736 states and 2541 transitions. [2020-10-14 09:25:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:25:49,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 09:25:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:49,943 INFO L225 Difference]: With dead ends: 1736 [2020-10-14 09:25:49,943 INFO L226 Difference]: Without dead ends: 1150 [2020-10-14 09:25:49,948 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 [2020-10-14 09:25:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-10-14 09:25:50,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1127. [2020-10-14 09:25:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-10-14 09:25:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1644 transitions. [2020-10-14 09:25:50,059 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1644 transitions. Word has length 152 [2020-10-14 09:25:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:50,059 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1644 transitions. [2020-10-14 09:25:50,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:25:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1644 transitions. [2020-10-14 09:25:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 09:25:50,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:50,065 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] [2020-10-14 09:25:50,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:25:50,066 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:50,066 INFO L82 PathProgramCache]: Analyzing trace with hash 305858022, now seen corresponding path program 1 times [2020-10-14 09:25:50,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:50,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771944232] [2020-10-14 09:25:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:53,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:55,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:55,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 09:25:55,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:25:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:25:55,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:55,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:25:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:25:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:25:55,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:55,409 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:25:55,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:55,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:55,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:55,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:25:55,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:55,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:25:55,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771944232] [2020-10-14 09:25:55,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:55,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:25:55,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240774848] [2020-10-14 09:25:55,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:25:55,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:55,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:25:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:25:55,477 INFO L87 Difference]: Start difference. First operand 1127 states and 1644 transitions. Second operand 4 states. [2020-10-14 09:25:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:58,786 INFO L93 Difference]: Finished difference Result 3346 states and 4882 transitions. [2020-10-14 09:25:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:25:58,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-14 09:25:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:58,800 INFO L225 Difference]: With dead ends: 3346 [2020-10-14 09:25:58,800 INFO L226 Difference]: Without dead ends: 2242 [2020-10-14 09:25:58,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:25:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2020-10-14 09:25:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1130. [2020-10-14 09:25:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2020-10-14 09:25:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1648 transitions. [2020-10-14 09:25:58,899 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1648 transitions. Word has length 153 [2020-10-14 09:25:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:58,899 INFO L479 AbstractCegarLoop]: Abstraction has 1130 states and 1648 transitions. [2020-10-14 09:25:58,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:25:58,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1648 transitions. [2020-10-14 09:25:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 09:25:58,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:58,903 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] [2020-10-14 09:25:58,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:25:58,904 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:58,904 INFO L82 PathProgramCache]: Analyzing trace with hash 783375886, now seen corresponding path program 1 times [2020-10-14 09:25:58,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:58,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738093463] [2020-10-14 09:25:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:59,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:00,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:04,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:04,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 09:26:04,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:26:04,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:26:04,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:04,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:26:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 09:26:04,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:04,369 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:26:04,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:04,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:26:04,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:04,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:04,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738093463] [2020-10-14 09:26:04,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:04,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:04,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600864370] [2020-10-14 09:26:04,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:04,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:04,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:04,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:04,523 INFO L87 Difference]: Start difference. First operand 1130 states and 1648 transitions. Second operand 5 states. [2020-10-14 09:26:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:07,759 INFO L93 Difference]: Finished difference Result 3251 states and 4717 transitions. [2020-10-14 09:26:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:07,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-14 09:26:07,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:07,779 INFO L225 Difference]: With dead ends: 3251 [2020-10-14 09:26:07,779 INFO L226 Difference]: Without dead ends: 2165 [2020-10-14 09:26:07,783 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 [2020-10-14 09:26:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-10-14 09:26:07,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2137. [2020-10-14 09:26:07,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2020-10-14 09:26:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3085 transitions. [2020-10-14 09:26:07,881 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3085 transitions. Word has length 154 [2020-10-14 09:26:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:07,882 INFO L479 AbstractCegarLoop]: Abstraction has 2137 states and 3085 transitions. [2020-10-14 09:26:07,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3085 transitions. [2020-10-14 09:26:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 09:26:07,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:07,886 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] [2020-10-14 09:26:07,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:26:07,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:07,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash 5350089, now seen corresponding path program 1 times [2020-10-14 09:26:07,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:07,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127445895] [2020-10-14 09:26:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:11,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:12,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:12,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 09:26:12,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:26:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:26:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:12,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 09:26:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:26:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:13,246 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:26:13,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:13,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:13,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:13,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:26:13,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:13,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:13,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127445895] [2020-10-14 09:26:13,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:13,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:13,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519791126] [2020-10-14 09:26:13,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:13,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:13,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:13,321 INFO L87 Difference]: Start difference. First operand 2137 states and 3085 transitions. Second operand 4 states. [2020-10-14 09:26:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:16,360 INFO L93 Difference]: Finished difference Result 6146 states and 8886 transitions. [2020-10-14 09:26:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:26:16,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-14 09:26:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:16,379 INFO L225 Difference]: With dead ends: 6146 [2020-10-14 09:26:16,379 INFO L226 Difference]: Without dead ends: 4215 [2020-10-14 09:26:16,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2020-10-14 09:26:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 2143. [2020-10-14 09:26:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2143 states. [2020-10-14 09:26:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 3093 transitions. [2020-10-14 09:26:16,500 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 3093 transitions. Word has length 155 [2020-10-14 09:26:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:16,500 INFO L479 AbstractCegarLoop]: Abstraction has 2143 states and 3093 transitions. [2020-10-14 09:26:16,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 3093 transitions. [2020-10-14 09:26:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 09:26:16,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:16,505 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] [2020-10-14 09:26:16,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:26:16,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:16,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:16,506 INFO L82 PathProgramCache]: Analyzing trace with hash 632483855, now seen corresponding path program 1 times [2020-10-14 09:26:16,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:16,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169197792] [2020-10-14 09:26:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:16,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:16,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:17,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:21,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 09:26:21,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:26:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:26:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:21,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:26:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 09:26:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:21,917 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:26:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:21,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:26:21,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:21,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:22,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169197792] [2020-10-14 09:26:22,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:22,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:22,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894454187] [2020-10-14 09:26:22,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:22,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:22,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:22,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:22,020 INFO L87 Difference]: Start difference. First operand 2143 states and 3093 transitions. Second operand 5 states. [2020-10-14 09:26:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:25,655 INFO L93 Difference]: Finished difference Result 5960 states and 8613 transitions. [2020-10-14 09:26:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:25,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 09:26:25,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:25,671 INFO L225 Difference]: With dead ends: 5960 [2020-10-14 09:26:25,672 INFO L226 Difference]: Without dead ends: 4128 [2020-10-14 09:26:25,677 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 [2020-10-14 09:26:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2020-10-14 09:26:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 4107. [2020-10-14 09:26:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4107 states. [2020-10-14 09:26:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 5859 transitions. [2020-10-14 09:26:25,913 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 5859 transitions. Word has length 156 [2020-10-14 09:26:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:25,914 INFO L479 AbstractCegarLoop]: Abstraction has 4107 states and 5859 transitions. [2020-10-14 09:26:25,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 5859 transitions. [2020-10-14 09:26:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 09:26:25,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:25,925 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] [2020-10-14 09:26:25,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:26:25,926 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:25,926 INFO L82 PathProgramCache]: Analyzing trace with hash 314757448, now seen corresponding path program 1 times [2020-10-14 09:26:25,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:25,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152682260] [2020-10-14 09:26:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:26,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:26,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:26,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:26,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:30,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:30,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 09:26:30,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:26:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 09:26:30,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:30,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:26:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:26:30,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:31,247 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:26:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:31,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:31,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:31,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:31,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:26:31,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:31,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:31,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152682260] [2020-10-14 09:26:31,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:31,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:31,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283933971] [2020-10-14 09:26:31,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:31,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:31,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:31,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:31,296 INFO L87 Difference]: Start difference. First operand 4107 states and 5859 transitions. Second operand 4 states. [2020-10-14 09:26:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:33,394 INFO L93 Difference]: Finished difference Result 12115 states and 17299 transitions. [2020-10-14 09:26:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:26:33,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-14 09:26:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:33,430 INFO L225 Difference]: With dead ends: 12115 [2020-10-14 09:26:33,431 INFO L226 Difference]: Without dead ends: 8167 [2020-10-14 09:26:33,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8167 states. [2020-10-14 09:26:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8167 to 4119. [2020-10-14 09:26:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4119 states. [2020-10-14 09:26:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4119 states to 4119 states and 5875 transitions. [2020-10-14 09:26:33,699 INFO L78 Accepts]: Start accepts. Automaton has 4119 states and 5875 transitions. Word has length 157 [2020-10-14 09:26:33,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:33,700 INFO L479 AbstractCegarLoop]: Abstraction has 4119 states and 5875 transitions. [2020-10-14 09:26:33,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4119 states and 5875 transitions. [2020-10-14 09:26:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 09:26:33,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:33,707 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] [2020-10-14 09:26:33,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:26:33,708 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1691036182, now seen corresponding path program 1 times [2020-10-14 09:26:33,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:33,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957300036] [2020-10-14 09:26:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:38,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 09:26:38,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:26:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:26:38,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:38,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:26:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 09:26:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:39,062 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:26:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:39,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:39,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:26:39,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:39,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:39,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957300036] [2020-10-14 09:26:39,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:39,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:39,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924883619] [2020-10-14 09:26:39,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:39,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:39,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:39,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:39,114 INFO L87 Difference]: Start difference. First operand 4119 states and 5875 transitions. Second operand 5 states. [2020-10-14 09:26:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:42,493 INFO L93 Difference]: Finished difference Result 11695 states and 16645 transitions. [2020-10-14 09:26:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:42,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 09:26:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:42,525 INFO L225 Difference]: With dead ends: 11695 [2020-10-14 09:26:42,525 INFO L226 Difference]: Without dead ends: 7911 [2020-10-14 09:26:42,532 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 [2020-10-14 09:26:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7911 states. [2020-10-14 09:26:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7911 to 7877. [2020-10-14 09:26:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7877 states. [2020-10-14 09:26:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7877 states to 7877 states and 11091 transitions. [2020-10-14 09:26:42,960 INFO L78 Accepts]: Start accepts. Automaton has 7877 states and 11091 transitions. Word has length 158 [2020-10-14 09:26:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:42,961 INFO L479 AbstractCegarLoop]: Abstraction has 7877 states and 11091 transitions. [2020-10-14 09:26:42,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7877 states and 11091 transitions. [2020-10-14 09:26:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 09:26:42,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:42,973 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] [2020-10-14 09:26:42,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:26:42,973 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:42,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1101482736, now seen corresponding path program 1 times [2020-10-14 09:26:42,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:42,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346745667] [2020-10-14 09:26:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:43,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:48,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:48,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 09:26:48,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:26:48,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:26:48,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:48,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:26:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:26:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:48,323 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:26:48,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:48,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:48,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:26:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:48,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:48,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346745667] [2020-10-14 09:26:48,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:48,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:48,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637371664] [2020-10-14 09:26:48,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:48,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:48,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:48,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:48,366 INFO L87 Difference]: Start difference. First operand 7877 states and 11091 transitions. Second operand 5 states. [2020-10-14 09:26:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:50,404 INFO L93 Difference]: Finished difference Result 15708 states and 22118 transitions. [2020-10-14 09:26:50,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:50,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 09:26:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:50,420 INFO L225 Difference]: With dead ends: 15708 [2020-10-14 09:26:50,420 INFO L226 Difference]: Without dead ends: 7872 [2020-10-14 09:26:50,431 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 [2020-10-14 09:26:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7872 states. [2020-10-14 09:26:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7872 to 7872. [2020-10-14 09:26:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7872 states. [2020-10-14 09:26:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7872 states to 7872 states and 11082 transitions. [2020-10-14 09:26:50,817 INFO L78 Accepts]: Start accepts. Automaton has 7872 states and 11082 transitions. Word has length 158 [2020-10-14 09:26:50,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:50,817 INFO L479 AbstractCegarLoop]: Abstraction has 7872 states and 11082 transitions. [2020-10-14 09:26:50,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7872 states and 11082 transitions. [2020-10-14 09:26:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 09:26:50,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:50,827 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] [2020-10-14 09:26:50,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:26:50,827 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2060330054, now seen corresponding path program 1 times [2020-10-14 09:26:50,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:50,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170245314] [2020-10-14 09:26:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:50,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:51,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:55,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:55,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 09:26:55,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:26:55,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:26:55,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:55,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:26:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 09:26:55,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:56,169 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:26:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:56,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:56,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:56,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:26:56,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:56,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:56,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170245314] [2020-10-14 09:26:56,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:56,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:56,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66693270] [2020-10-14 09:26:56,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:56,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:56,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:56,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:56,218 INFO L87 Difference]: Start difference. First operand 7872 states and 11082 transitions. Second operand 5 states. [2020-10-14 09:26:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:58,768 INFO L93 Difference]: Finished difference Result 17192 states and 24230 transitions. [2020-10-14 09:26:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:58,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 09:26:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:58,790 INFO L225 Difference]: With dead ends: 17192 [2020-10-14 09:26:58,790 INFO L226 Difference]: Without dead ends: 9830 [2020-10-14 09:26:58,804 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 [2020-10-14 09:26:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9830 states. [2020-10-14 09:26:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9830 to 9800. [2020-10-14 09:26:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9800 states. [2020-10-14 09:26:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9800 states to 9800 states and 13564 transitions. [2020-10-14 09:26:59,467 INFO L78 Accepts]: Start accepts. Automaton has 9800 states and 13564 transitions. Word has length 158 [2020-10-14 09:26:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:59,468 INFO L479 AbstractCegarLoop]: Abstraction has 9800 states and 13564 transitions. [2020-10-14 09:26:59,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 9800 states and 13564 transitions. [2020-10-14 09:26:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 09:26:59,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:59,476 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] [2020-10-14 09:26:59,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:26:59,477 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:59,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1636658012, now seen corresponding path program 1 times [2020-10-14 09:26:59,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:59,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145310357] [2020-10-14 09:26:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:04,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 09:27:04,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:27:04,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:27:04,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:04,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:27:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 09:27:04,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:04,796 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:27:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:04,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:04,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:04,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:27:04,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:04,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:27:04,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145310357] [2020-10-14 09:27:04,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:04,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:27:04,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596381342] [2020-10-14 09:27:04,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:27:04,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:04,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:27:04,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:04,842 INFO L87 Difference]: Start difference. First operand 9800 states and 13564 transitions. Second operand 4 states. [2020-10-14 09:27:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:07,729 INFO L93 Difference]: Finished difference Result 22988 states and 32617 transitions. [2020-10-14 09:27:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:27:07,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-14 09:27:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:07,764 INFO L225 Difference]: With dead ends: 22988 [2020-10-14 09:27:07,764 INFO L226 Difference]: Without dead ends: 14206 [2020-10-14 09:27:07,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14206 states. [2020-10-14 09:27:08,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14206 to 12364. [2020-10-14 09:27:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12364 states. [2020-10-14 09:27:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12364 states to 12364 states and 17628 transitions. [2020-10-14 09:27:08,648 INFO L78 Accepts]: Start accepts. Automaton has 12364 states and 17628 transitions. Word has length 162 [2020-10-14 09:27:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:08,648 INFO L479 AbstractCegarLoop]: Abstraction has 12364 states and 17628 transitions. [2020-10-14 09:27:08,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:27:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand 12364 states and 17628 transitions. [2020-10-14 09:27:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 09:27:08,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:08,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:08,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:27:08,658 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:08,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:08,658 INFO L82 PathProgramCache]: Analyzing trace with hash 69588695, now seen corresponding path program 1 times [2020-10-14 09:27:08,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:08,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998442486] [2020-10-14 09:27:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:13,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:13,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 09:27:13,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:27:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:27:13,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:13,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:27:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:27:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:14,009 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:27:14,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:14,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:14,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:14,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:27:14,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:14,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:27:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:27:14,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998442486] [2020-10-14 09:27:14,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:14,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:14,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565573454] [2020-10-14 09:27:14,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:14,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:14,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:14,062 INFO L87 Difference]: Start difference. First operand 12364 states and 17628 transitions. Second operand 5 states. [2020-10-14 09:27:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:16,264 INFO L93 Difference]: Finished difference Result 19727 states and 28149 transitions. [2020-10-14 09:27:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:16,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 09:27:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:16,285 INFO L225 Difference]: With dead ends: 19727 [2020-10-14 09:27:16,285 INFO L226 Difference]: Without dead ends: 10064 [2020-10-14 09:27:16,302 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 [2020-10-14 09:27:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2020-10-14 09:27:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 10064. [2020-10-14 09:27:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10064 states. [2020-10-14 09:27:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 14313 transitions. [2020-10-14 09:27:16,886 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 14313 transitions. Word has length 165 [2020-10-14 09:27:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:16,886 INFO L479 AbstractCegarLoop]: Abstraction has 10064 states and 14313 transitions. [2020-10-14 09:27:16,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 14313 transitions. [2020-10-14 09:27:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 09:27:16,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:16,893 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] [2020-10-14 09:27:16,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:27:16,893 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:16,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:16,894 INFO L82 PathProgramCache]: Analyzing trace with hash -711499488, now seen corresponding path program 1 times [2020-10-14 09:27:16,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:16,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041595765] [2020-10-14 09:27:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:17,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:21,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:21,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 09:27:21,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:27:21,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:27:21,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:21,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:27:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:27:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:22,225 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:27:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:22,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:22,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:22,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:27:22,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:22,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:27:22,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041595765] [2020-10-14 09:27:22,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:22,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:27:22,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145543403] [2020-10-14 09:27:22,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:27:22,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:22,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:27:22,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:22,271 INFO L87 Difference]: Start difference. First operand 10064 states and 14313 transitions. Second operand 4 states. [2020-10-14 09:27:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:25,431 INFO L93 Difference]: Finished difference Result 24080 states and 35050 transitions. [2020-10-14 09:27:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:27:25,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-14 09:27:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:25,457 INFO L225 Difference]: With dead ends: 24080 [2020-10-14 09:27:25,457 INFO L226 Difference]: Without dead ends: 15200 [2020-10-14 09:27:25,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15200 states. [2020-10-14 09:27:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15200 to 13756. [2020-10-14 09:27:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13756 states. [2020-10-14 09:27:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13756 states to 13756 states and 20143 transitions. [2020-10-14 09:27:26,326 INFO L78 Accepts]: Start accepts. Automaton has 13756 states and 20143 transitions. Word has length 167 [2020-10-14 09:27:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:26,326 INFO L479 AbstractCegarLoop]: Abstraction has 13756 states and 20143 transitions. [2020-10-14 09:27:26,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:27:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13756 states and 20143 transitions. [2020-10-14 09:27:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 09:27:26,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:26,335 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] [2020-10-14 09:27:26,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:27:26,335 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash -658626802, now seen corresponding path program 1 times [2020-10-14 09:27:26,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:26,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42126337] [2020-10-14 09:27:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:26,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:26,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:26,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:31,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:31,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 09:27:31,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:27:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:27:31,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:31,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:27:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:27:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:31,644 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:27:31,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:31,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:31,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:27:31,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42126337] [2020-10-14 09:27:31,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:31,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:27:31,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956684687] [2020-10-14 09:27:31,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:27:31,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:31,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:27:31,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:31,683 INFO L87 Difference]: Start difference. First operand 13756 states and 20143 transitions. Second operand 4 states. [2020-10-14 09:27:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:35,002 INFO L93 Difference]: Finished difference Result 31264 states and 46617 transitions. [2020-10-14 09:27:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:27:35,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-14 09:27:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:35,029 INFO L225 Difference]: With dead ends: 31264 [2020-10-14 09:27:35,030 INFO L226 Difference]: Without dead ends: 20722 [2020-10-14 09:27:35,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20722 states. [2020-10-14 09:27:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20722 to 19206. [2020-10-14 09:27:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19206 states. [2020-10-14 09:27:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19206 states to 19206 states and 28743 transitions. [2020-10-14 09:27:36,189 INFO L78 Accepts]: Start accepts. Automaton has 19206 states and 28743 transitions. Word has length 168 [2020-10-14 09:27:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:36,190 INFO L479 AbstractCegarLoop]: Abstraction has 19206 states and 28743 transitions. [2020-10-14 09:27:36,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:27:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 19206 states and 28743 transitions. [2020-10-14 09:27:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 09:27:36,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:36,197 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] [2020-10-14 09:27:36,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:27:36,197 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1136677113, now seen corresponding path program 1 times [2020-10-14 09:27:36,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:36,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235700895] [2020-10-14 09:27:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:37,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:41,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:41,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 09:27:41,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:27:41,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 09:27:41,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:41,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:27:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 09:27:41,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:41,609 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:27:41,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:41,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:41,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:41,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:27:41,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:41,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:41,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:41,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:41,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:27:41,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235700895] [2020-10-14 09:27:41,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:41,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:41,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640061656] [2020-10-14 09:27:41,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:41,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:41,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:41,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:41,681 INFO L87 Difference]: Start difference. First operand 19206 states and 28743 transitions. Second operand 5 states. [2020-10-14 09:27:47,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:47,055 INFO L93 Difference]: Finished difference Result 49862 states and 74588 transitions. [2020-10-14 09:27:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:47,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 09:27:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:47,092 INFO L225 Difference]: With dead ends: 49862 [2020-10-14 09:27:47,093 INFO L226 Difference]: Without dead ends: 31840 [2020-10-14 09:27:47,122 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 [2020-10-14 09:27:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31840 states. [2020-10-14 09:27:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31840 to 31808. [2020-10-14 09:27:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31808 states. [2020-10-14 09:27:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31808 states to 31808 states and 46762 transitions. [2020-10-14 09:27:49,242 INFO L78 Accepts]: Start accepts. Automaton has 31808 states and 46762 transitions. Word has length 170 [2020-10-14 09:27:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:49,242 INFO L479 AbstractCegarLoop]: Abstraction has 31808 states and 46762 transitions. [2020-10-14 09:27:49,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 31808 states and 46762 transitions. [2020-10-14 09:27:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 09:27:49,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:49,253 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] [2020-10-14 09:27:49,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:27:49,254 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:49,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:49,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1329960071, now seen corresponding path program 1 times [2020-10-14 09:27:49,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:49,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473005070] [2020-10-14 09:27:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:49,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:49,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 09:27:54,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:27:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:27:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:54,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:27:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:27:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:54,595 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:27:54,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:54,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:54,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:54,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:54,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:27:54,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:54,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:27:54,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473005070] [2020-10-14 09:27:54,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:54,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:54,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632925144] [2020-10-14 09:27:54,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:54,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:54,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:54,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:54,637 INFO L87 Difference]: Start difference. First operand 31808 states and 46762 transitions. Second operand 5 states. [2020-10-14 09:27:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:58,118 INFO L93 Difference]: Finished difference Result 57153 states and 84184 transitions. [2020-10-14 09:27:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:58,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 09:27:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:58,157 INFO L225 Difference]: With dead ends: 57153 [2020-10-14 09:27:58,157 INFO L226 Difference]: Without dead ends: 25437 [2020-10-14 09:27:58,193 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 [2020-10-14 09:27:58,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25437 states. [2020-10-14 09:28:01,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25437 to 25437. [2020-10-14 09:28:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25437 states. [2020-10-14 09:28:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25437 states to 25437 states and 37550 transitions. [2020-10-14 09:28:01,189 INFO L78 Accepts]: Start accepts. Automaton has 25437 states and 37550 transitions. Word has length 170 [2020-10-14 09:28:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:01,189 INFO L479 AbstractCegarLoop]: Abstraction has 25437 states and 37550 transitions. [2020-10-14 09:28:01,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:28:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 25437 states and 37550 transitions. [2020-10-14 09:28:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:28:01,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:01,198 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] [2020-10-14 09:28:01,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:28:01,199 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:01,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:01,199 INFO L82 PathProgramCache]: Analyzing trace with hash -176132977, now seen corresponding path program 1 times [2020-10-14 09:28:01,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:01,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99485854] [2020-10-14 09:28:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:01,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:28:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:28:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:28:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:06,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:28:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:28:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 09:28:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:06,507 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:28:06,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:06,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:06,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:06,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:28:06,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:06,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:28:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:28:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:28:06,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99485854] [2020-10-14 09:28:06,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:06,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:28:06,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941647279] [2020-10-14 09:28:06,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:28:06,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:06,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:28:06,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:28:06,564 INFO L87 Difference]: Start difference. First operand 25437 states and 37550 transitions. Second operand 6 states. [2020-10-14 09:28:06,856 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-14 09:28:10,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:10,441 INFO L93 Difference]: Finished difference Result 49630 states and 73680 transitions. [2020-10-14 09:28:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:28:10,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-10-14 09:28:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:10,471 INFO L225 Difference]: With dead ends: 49630 [2020-10-14 09:28:10,471 INFO L226 Difference]: Without dead ends: 25437 [2020-10-14 09:28:10,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:28:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25437 states. [2020-10-14 09:28:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25437 to 25437. [2020-10-14 09:28:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25437 states. [2020-10-14 09:28:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25437 states to 25437 states and 37229 transitions. [2020-10-14 09:28:12,476 INFO L78 Accepts]: Start accepts. Automaton has 25437 states and 37229 transitions. Word has length 177 [2020-10-14 09:28:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:12,476 INFO L479 AbstractCegarLoop]: Abstraction has 25437 states and 37229 transitions. [2020-10-14 09:28:12,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:28:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 25437 states and 37229 transitions. [2020-10-14 09:28:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:28:12,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:12,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:28:12,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:28:12,484 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:12,485 INFO L82 PathProgramCache]: Analyzing trace with hash -310422860, now seen corresponding path program 1 times [2020-10-14 09:28:12,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:12,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736162207] [2020-10-14 09:28:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:12,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:17,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:17,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:28:17,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:28:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:28:17,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:17,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:28:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 09:28:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:28:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:17,825 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:28:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:17,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:17,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:17,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:17,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:17,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:28:17,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:17,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:28:17,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736162207] [2020-10-14 09:28:17,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:17,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:28:17,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289859323] [2020-10-14 09:28:17,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:28:17,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:17,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:28:17,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:28:17,879 INFO L87 Difference]: Start difference. First operand 25437 states and 37229 transitions. Second operand 5 states. [2020-10-14 09:28:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:21,427 INFO L93 Difference]: Finished difference Result 44595 states and 65324 transitions. [2020-10-14 09:28:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:28:21,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-14 09:28:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:21,455 INFO L225 Difference]: With dead ends: 44595 [2020-10-14 09:28:21,455 INFO L226 Difference]: Without dead ends: 23048 [2020-10-14 09:28:21,480 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 [2020-10-14 09:28:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23048 states. [2020-10-14 09:28:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23048 to 23042. [2020-10-14 09:28:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23042 states. [2020-10-14 09:28:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23042 states to 23042 states and 33782 transitions. [2020-10-14 09:28:23,001 INFO L78 Accepts]: Start accepts. Automaton has 23042 states and 33782 transitions. Word has length 177 [2020-10-14 09:28:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:23,001 INFO L479 AbstractCegarLoop]: Abstraction has 23042 states and 33782 transitions. [2020-10-14 09:28:23,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:28:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 23042 states and 33782 transitions. [2020-10-14 09:28:23,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 09:28:23,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:23,006 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] [2020-10-14 09:28:23,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:28:23,007 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:23,007 INFO L82 PathProgramCache]: Analyzing trace with hash -769956950, now seen corresponding path program 1 times [2020-10-14 09:28:23,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:23,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687620217] [2020-10-14 09:28:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:23,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:28,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:28,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 09:28:28,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:28:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 09:28:28,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:28,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:28:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 09:28:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 09:28:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:28,375 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:28:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:28,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:28,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:28,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:28:28,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:28,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:28,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:28:28,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687620217] [2020-10-14 09:28:28,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:28,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:28:28,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806169268] [2020-10-14 09:28:28,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:28:28,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:28,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:28:28,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:28:28,422 INFO L87 Difference]: Start difference. First operand 23042 states and 33782 transitions. Second operand 6 states. [2020-10-14 09:28:28,707 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-14 09:28:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:35,663 INFO L93 Difference]: Finished difference Result 79222 states and 119341 transitions. [2020-10-14 09:28:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:28:35,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-10-14 09:28:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:35,736 INFO L225 Difference]: With dead ends: 79222 [2020-10-14 09:28:35,736 INFO L226 Difference]: Without dead ends: 62092 [2020-10-14 09:28:35,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:28:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62092 states. [2020-10-14 09:28:40,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62092 to 42986. [2020-10-14 09:28:40,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42986 states. [2020-10-14 09:28:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42986 states to 42986 states and 63620 transitions. [2020-10-14 09:28:40,281 INFO L78 Accepts]: Start accepts. Automaton has 42986 states and 63620 transitions. Word has length 179 [2020-10-14 09:28:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:40,282 INFO L479 AbstractCegarLoop]: Abstraction has 42986 states and 63620 transitions. [2020-10-14 09:28:40,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:28:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 42986 states and 63620 transitions. [2020-10-14 09:28:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 09:28:40,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:40,289 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] [2020-10-14 09:28:40,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:28:40,289 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:40,290 INFO L82 PathProgramCache]: Analyzing trace with hash -308252306, now seen corresponding path program 1 times [2020-10-14 09:28:40,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:40,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634178419] [2020-10-14 09:28:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:40,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:40,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:43,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:45,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 09:28:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:28:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:28:45,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:45,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:28:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 09:28:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 09:28:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:45,667 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:28:45,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:28:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:45,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:28:45,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634178419] [2020-10-14 09:28:45,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:45,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:28:45,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275867872] [2020-10-14 09:28:45,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:28:45,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:45,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:28:45,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:28:45,711 INFO L87 Difference]: Start difference. First operand 42986 states and 63620 transitions. Second operand 5 states. [2020-10-14 09:28:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:53,201 INFO L93 Difference]: Finished difference Result 79854 states and 119634 transitions. [2020-10-14 09:28:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:28:53,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-14 09:28:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:53,280 INFO L225 Difference]: With dead ends: 79854 [2020-10-14 09:28:53,280 INFO L226 Difference]: Without dead ends: 60678 [2020-10-14 09:28:53,301 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 [2020-10-14 09:28:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60678 states. [2020-10-14 09:28:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60678 to 42944. [2020-10-14 09:28:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42944 states. [2020-10-14 09:28:58,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42944 states to 42944 states and 63516 transitions. [2020-10-14 09:28:58,145 INFO L78 Accepts]: Start accepts. Automaton has 42944 states and 63516 transitions. Word has length 179 [2020-10-14 09:28:58,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:58,145 INFO L479 AbstractCegarLoop]: Abstraction has 42944 states and 63516 transitions. [2020-10-14 09:28:58,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:28:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand 42944 states and 63516 transitions. [2020-10-14 09:28:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 09:28:58,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:58,153 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] [2020-10-14 09:28:58,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:28:58,153 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:58,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1482122423, now seen corresponding path program 1 times [2020-10-14 09:28:58,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:58,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123502129] [2020-10-14 09:28:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:01,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:02,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:02,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:03,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:03,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 09:29:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:29:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:29:03,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:03,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 09:29:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:29:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 09:29:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:03,688 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 34 [2020-10-14 09:29:03,918 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-14 09:29:04,219 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-14 09:29:05,085 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:29:05,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:05,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:05,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:29:05,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:05,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:29:05,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123502129] [2020-10-14 09:29:05,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:05,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 09:29:05,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761894170] [2020-10-14 09:29:05,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 09:29:05,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:05,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 09:29:05,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 09:29:05,203 INFO L87 Difference]: Start difference. First operand 42944 states and 63516 transitions. Second operand 19 states. [2020-10-14 09:29:05,553 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-14 09:29:06,262 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-14 09:29:06,475 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-10-14 09:29:06,711 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-10-14 09:29:07,376 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2020-10-14 09:29:07,786 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2020-10-14 09:29:07,953 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-14 09:29:08,191 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-14 09:29:08,333 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-14 09:29:11,739 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-14 09:29:11,902 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-14 09:29:12,197 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-14 09:29:12,629 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37