/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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:27:34,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:27:34,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:27:34,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:27:34,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:27:34,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:27:34,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:27:34,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:27:34,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:27:34,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:27:34,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:27:34,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:27:34,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:27:34,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:27:34,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:27:34,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:27:34,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:27:34,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:27:34,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:27:34,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:27:34,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:27:34,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:27:34,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:27:34,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:27:34,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:27:34,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:27:34,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:27:34,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:27:34,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:27:34,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:27:34,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:27:34,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:27:34,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:27:34,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:27:34,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:27:34,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:27:34,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:27:34,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:27:34,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:27:34,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:27:34,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:27:34,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:27:34,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:27:34,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:27:34,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:27:34,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:27:34,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:27:34,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:27:34,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:27:34,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:27:34,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:27:34,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:27:34,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:27:34,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:27:34,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:27:34,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:27:34,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:27:34,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:27:34,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:27:34,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:27:34,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:27:34,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:27:34,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:27:34,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:27:34,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:27:34,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:27:34,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:27:34,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:27:34,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:27:34,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:27:34,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:27:34,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:27:34,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:27:34,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:27:34,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:27:34,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:27:34,833 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:27:34,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-14 08:27:34,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83bbb652/e449f701d6b44f248c0359c8ae0f5e0f/FLAG2a832e607 [2020-10-14 08:27:35,559 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:27:35,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-14 08:27:35,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83bbb652/e449f701d6b44f248c0359c8ae0f5e0f/FLAG2a832e607 [2020-10-14 08:27:35,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83bbb652/e449f701d6b44f248c0359c8ae0f5e0f [2020-10-14 08:27:35,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:27:35,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:27:35,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:27:35,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:27:35,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:27:35,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:27:35" (1/1) ... [2020-10-14 08:27:35,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fd2f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:35, skipping insertion in model container [2020-10-14 08:27:35,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:27:35" (1/1) ... [2020-10-14 08:27:35,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:27:35,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:27:36,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:27:36,595 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:27:37,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:27:37,130 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:27:37,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37 WrapperNode [2020-10-14 08:27:37,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:27:37,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:27:37,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:27:37,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:27:37,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (1/1) ... [2020-10-14 08:27:37,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (1/1) ... [2020-10-14 08:27:37,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (1/1) ... [2020-10-14 08:27:37,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (1/1) ... [2020-10-14 08:27:37,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (1/1) ... [2020-10-14 08:27:37,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (1/1) ... [2020-10-14 08:27:37,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (1/1) ... [2020-10-14 08:27:37,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:27:37,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:27:37,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:27:37,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:27:37,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:27:37,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:27:37,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:27:37,386 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:27:37,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:27:37,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:27:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:27:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:27:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:27:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:27:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:27:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:27:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:27:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:27:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:27:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:27:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:27:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:27:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:27:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:27:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:27:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:27:39,465 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:27:39,465 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:27:39,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:27:39 BoogieIcfgContainer [2020-10-14 08:27:39,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:27:39,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:27:39,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:27:39,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:27:39,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:27:35" (1/3) ... [2020-10-14 08:27:39,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b902ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:27:39, skipping insertion in model container [2020-10-14 08:27:39,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:37" (2/3) ... [2020-10-14 08:27:39,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b902ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:27:39, skipping insertion in model container [2020-10-14 08:27:39,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:27:39" (3/3) ... [2020-10-14 08:27:39,483 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-14 08:27:39,496 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:27:39,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:27:39,524 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:27:39,556 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:27:39,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:27:39,557 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:27:39,557 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:27:39,557 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:27:39,557 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:27:39,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:27:39,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:27:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states. [2020-10-14 08:27:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 08:27:39,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:39,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:27:39,615 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:39,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1878018170, now seen corresponding path program 1 times [2020-10-14 08:27:39,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:39,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310272448] [2020-10-14 08:27:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:41,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:45,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:45,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 08:27:45,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:27:45,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:27:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:45,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:27:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 08:27:45,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:27:46,454 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:27:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:46,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:46,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:46,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:27:46,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:46,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:27:46,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310272448] [2020-10-14 08:27:46,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:46,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:46,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514956534] [2020-10-14 08:27:46,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:46,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:46,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:46,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:46,677 INFO L87 Difference]: Start difference. First operand 586 states. Second operand 5 states. [2020-10-14 08:27:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:53,857 INFO L93 Difference]: Finished difference Result 1700 states and 3032 transitions. [2020-10-14 08:27:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:27:53,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-14 08:27:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:53,897 INFO L225 Difference]: With dead ends: 1700 [2020-10-14 08:27:53,898 INFO L226 Difference]: Without dead ends: 1139 [2020-10-14 08:27:53,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:53,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-10-14 08:27:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1137. [2020-10-14 08:27:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1137 states. [2020-10-14 08:27:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1777 transitions. [2020-10-14 08:27:54,108 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1777 transitions. Word has length 238 [2020-10-14 08:27:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:54,112 INFO L479 AbstractCegarLoop]: Abstraction has 1137 states and 1777 transitions. [2020-10-14 08:27:54,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1777 transitions. [2020-10-14 08:27:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 08:27:54,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:54,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:27:54,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:27:54,134 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:54,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:54,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1570878624, now seen corresponding path program 1 times [2020-10-14 08:27:54,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:54,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104111986] [2020-10-14 08:27:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:57,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:59,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:59,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 08:27:59,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:27:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-14 08:27:59,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:59,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:27:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:27:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 08:27:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:59,898 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:27:59,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:59,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:27:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:59,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:28:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:28:00,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104111986] [2020-10-14 08:28:00,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:00,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:00,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469368904] [2020-10-14 08:28:00,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:00,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:00,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:00,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:00,144 INFO L87 Difference]: Start difference. First operand 1137 states and 1777 transitions. Second operand 4 states. [2020-10-14 08:28:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:06,728 INFO L93 Difference]: Finished difference Result 3212 states and 4983 transitions. [2020-10-14 08:28:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:06,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 08:28:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:06,743 INFO L225 Difference]: With dead ends: 3212 [2020-10-14 08:28:06,743 INFO L226 Difference]: Without dead ends: 2219 [2020-10-14 08:28:06,746 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 08:28:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-10-14 08:28:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2217. [2020-10-14 08:28:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-10-14 08:28:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3445 transitions. [2020-10-14 08:28:06,855 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3445 transitions. Word has length 240 [2020-10-14 08:28:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:06,856 INFO L479 AbstractCegarLoop]: Abstraction has 2217 states and 3445 transitions. [2020-10-14 08:28:06,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3445 transitions. [2020-10-14 08:28:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 08:28:06,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:06,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:28:06,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:28:06,864 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:06,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:06,864 INFO L82 PathProgramCache]: Analyzing trace with hash -546003163, now seen corresponding path program 1 times [2020-10-14 08:28:06,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:06,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518378368] [2020-10-14 08:28:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:11,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:11,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 08:28:11,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:28:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 08:28:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:11,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:28:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:28:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:12,517 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:28:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:12,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:12,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:28:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:12,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:28:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:28:12,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518378368] [2020-10-14 08:28:12,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:12,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:12,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270852751] [2020-10-14 08:28:12,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:12,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:12,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:12,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:12,682 INFO L87 Difference]: Start difference. First operand 2217 states and 3445 transitions. Second operand 4 states. [2020-10-14 08:28:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:16,325 INFO L93 Difference]: Finished difference Result 6477 states and 10029 transitions. [2020-10-14 08:28:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:16,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 08:28:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:16,352 INFO L225 Difference]: With dead ends: 6477 [2020-10-14 08:28:16,353 INFO L226 Difference]: Without dead ends: 4295 [2020-10-14 08:28:16,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:16,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2020-10-14 08:28:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 2230. [2020-10-14 08:28:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2020-10-14 08:28:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3463 transitions. [2020-10-14 08:28:16,530 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3463 transitions. Word has length 240 [2020-10-14 08:28:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:16,530 INFO L479 AbstractCegarLoop]: Abstraction has 2230 states and 3463 transitions. [2020-10-14 08:28:16,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3463 transitions. [2020-10-14 08:28:16,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 08:28:16,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:16,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:28:16,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:28:16,539 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:16,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2002352131, now seen corresponding path program 1 times [2020-10-14 08:28:16,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:16,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377151107] [2020-10-14 08:28:16,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:18,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:21,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:21,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 08:28:21,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:28:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:28:21,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:21,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 08:28:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:28:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:22,090 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:28:22,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:22,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:22,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:22,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:22,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:28:22,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:22,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:28:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:28:22,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377151107] [2020-10-14 08:28:22,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:22,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:22,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952777694] [2020-10-14 08:28:22,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:22,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:22,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:22,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:22,208 INFO L87 Difference]: Start difference. First operand 2230 states and 3463 transitions. Second operand 4 states. [2020-10-14 08:28:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:28,195 INFO L93 Difference]: Finished difference Result 6615 states and 10265 transitions. [2020-10-14 08:28:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:28,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-10-14 08:28:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:28,216 INFO L225 Difference]: With dead ends: 6615 [2020-10-14 08:28:28,216 INFO L226 Difference]: Without dead ends: 4424 [2020-10-14 08:28:28,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4424 states. [2020-10-14 08:28:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4424 to 2254. [2020-10-14 08:28:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2020-10-14 08:28:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3493 transitions. [2020-10-14 08:28:28,373 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3493 transitions. Word has length 241 [2020-10-14 08:28:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:28,374 INFO L479 AbstractCegarLoop]: Abstraction has 2254 states and 3493 transitions. [2020-10-14 08:28:28,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3493 transitions. [2020-10-14 08:28:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 08:28:28,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:28,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:28:28,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:28:28,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash 2124570971, now seen corresponding path program 1 times [2020-10-14 08:28:28,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:28,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187629575] [2020-10-14 08:28:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:30,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:33,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:33,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 08:28:33,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:28:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:28:33,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:33,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:28:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 08:28:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:33,894 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:28:33,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:33,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:33,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:33,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:28:33,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:33,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:33,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:34,017 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 08:28:34,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187629575] [2020-10-14 08:28:34,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:34,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:34,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832347662] [2020-10-14 08:28:34,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:34,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:34,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:34,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:34,020 INFO L87 Difference]: Start difference. First operand 2254 states and 3493 transitions. Second operand 4 states. [2020-10-14 08:28:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:39,825 INFO L93 Difference]: Finished difference Result 6395 states and 9871 transitions. [2020-10-14 08:28:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:39,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-10-14 08:28:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:39,846 INFO L225 Difference]: With dead ends: 6395 [2020-10-14 08:28:39,846 INFO L226 Difference]: Without dead ends: 4357 [2020-10-14 08:28:39,851 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 08:28:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2020-10-14 08:28:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4355. [2020-10-14 08:28:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4355 states. [2020-10-14 08:28:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 6710 transitions. [2020-10-14 08:28:40,080 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 6710 transitions. Word has length 242 [2020-10-14 08:28:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:40,081 INFO L479 AbstractCegarLoop]: Abstraction has 4355 states and 6710 transitions. [2020-10-14 08:28:40,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 6710 transitions. [2020-10-14 08:28:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 08:28:40,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:40,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:28:40,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:28:40,095 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash 532807480, now seen corresponding path program 1 times [2020-10-14 08:28:40,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:40,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134611304] [2020-10-14 08:28:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:40,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:42,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:45,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:45,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 08:28:45,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:28:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:28:45,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:45,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:28:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:28:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 08:28:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:45,689 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:28:45,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:45,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:45,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:45,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:45,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:28:45,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:45,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:45,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:28:45,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134611304] [2020-10-14 08:28:45,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:45,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:28:45,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890378126] [2020-10-14 08:28:45,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:28:45,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:45,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:28:45,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:28:45,823 INFO L87 Difference]: Start difference. First operand 4355 states and 6710 transitions. Second operand 5 states. [2020-10-14 08:28:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:51,005 INFO L93 Difference]: Finished difference Result 12357 states and 18930 transitions. [2020-10-14 08:28:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:28:51,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-14 08:28:51,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:51,038 INFO L225 Difference]: With dead ends: 12357 [2020-10-14 08:28:51,038 INFO L226 Difference]: Without dead ends: 8303 [2020-10-14 08:28:51,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:28:51,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8303 states. [2020-10-14 08:28:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8303 to 8301. [2020-10-14 08:28:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8301 states. [2020-10-14 08:28:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8301 states to 8301 states and 12656 transitions. [2020-10-14 08:28:51,551 INFO L78 Accepts]: Start accepts. Automaton has 8301 states and 12656 transitions. Word has length 242 [2020-10-14 08:28:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:51,552 INFO L479 AbstractCegarLoop]: Abstraction has 8301 states and 12656 transitions. [2020-10-14 08:28:51,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:28:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 8301 states and 12656 transitions. [2020-10-14 08:28:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 08:28:51,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:51,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:28:51,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:28:51,569 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:51,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1382329659, now seen corresponding path program 1 times [2020-10-14 08:28:51,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:51,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641554797] [2020-10-14 08:28:51,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:51,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:56,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:56,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 08:28:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:28:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:28:56,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:56,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:28:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:28:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 08:28:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:57,149 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:28:57,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:57,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:57,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:57,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:28:57,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:57,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:28:57,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641554797] [2020-10-14 08:28:57,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:57,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:28:57,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998957290] [2020-10-14 08:28:57,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:28:57,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:57,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:28:57,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:28:57,247 INFO L87 Difference]: Start difference. First operand 8301 states and 12656 transitions. Second operand 5 states. [2020-10-14 08:29:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:02,454 INFO L93 Difference]: Finished difference Result 17805 states and 27147 transitions. [2020-10-14 08:29:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:02,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-14 08:29:02,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:02,488 INFO L225 Difference]: With dead ends: 17805 [2020-10-14 08:29:02,488 INFO L226 Difference]: Without dead ends: 9683 [2020-10-14 08:29:02,501 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 08:29:02,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9683 states. [2020-10-14 08:29:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9683 to 8475. [2020-10-14 08:29:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8475 states. [2020-10-14 08:29:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8475 states to 8475 states and 12947 transitions. [2020-10-14 08:29:02,949 INFO L78 Accepts]: Start accepts. Automaton has 8475 states and 12947 transitions. Word has length 244 [2020-10-14 08:29:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:02,950 INFO L479 AbstractCegarLoop]: Abstraction has 8475 states and 12947 transitions. [2020-10-14 08:29:02,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:29:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 8475 states and 12947 transitions. [2020-10-14 08:29:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 08:29:02,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:02,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:02,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:29:02,969 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:02,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1953311587, now seen corresponding path program 1 times [2020-10-14 08:29:02,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:02,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423444666] [2020-10-14 08:29:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:08,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:08,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 08:29:08,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:29:08,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:29:08,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:08,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:29:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:29:08,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:08,436 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:29:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:08,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:08,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:08,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:08,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:29:08,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:08,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:08,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:08,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423444666] [2020-10-14 08:29:08,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:08,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:08,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484324029] [2020-10-14 08:29:08,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:08,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:08,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:08,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:08,498 INFO L87 Difference]: Start difference. First operand 8475 states and 12947 transitions. Second operand 4 states. [2020-10-14 08:29:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:12,284 INFO L93 Difference]: Finished difference Result 24947 states and 38051 transitions. [2020-10-14 08:29:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:29:12,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 246 [2020-10-14 08:29:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:12,319 INFO L225 Difference]: With dead ends: 24947 [2020-10-14 08:29:12,320 INFO L226 Difference]: Without dead ends: 16729 [2020-10-14 08:29:12,334 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 08:29:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16729 states. [2020-10-14 08:29:12,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16729 to 8559. [2020-10-14 08:29:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8559 states. [2020-10-14 08:29:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 13061 transitions. [2020-10-14 08:29:12,963 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 13061 transitions. Word has length 246 [2020-10-14 08:29:12,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:12,963 INFO L479 AbstractCegarLoop]: Abstraction has 8559 states and 13061 transitions. [2020-10-14 08:29:12,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:12,964 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 13061 transitions. [2020-10-14 08:29:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 08:29:12,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:12,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:12,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:29:12,979 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:12,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:12,980 INFO L82 PathProgramCache]: Analyzing trace with hash -373270075, now seen corresponding path program 1 times [2020-10-14 08:29:12,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:12,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017459078] [2020-10-14 08:29:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:18,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 08:29:18,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:29:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 08:29:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:18,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 08:29:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:29:18,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:18,433 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:29:18,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:18,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:18,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:29:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:18,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:18,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017459078] [2020-10-14 08:29:18,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:18,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:18,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056626473] [2020-10-14 08:29:18,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:18,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:18,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:18,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:18,488 INFO L87 Difference]: Start difference. First operand 8559 states and 13061 transitions. Second operand 4 states. [2020-10-14 08:29:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:24,897 INFO L93 Difference]: Finished difference Result 25031 states and 38149 transitions. [2020-10-14 08:29:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:29:24,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2020-10-14 08:29:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:24,932 INFO L225 Difference]: With dead ends: 25031 [2020-10-14 08:29:24,932 INFO L226 Difference]: Without dead ends: 16813 [2020-10-14 08:29:24,947 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 08:29:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16813 states. [2020-10-14 08:29:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16813 to 8667. [2020-10-14 08:29:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8667 states. [2020-10-14 08:29:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8667 states to 8667 states and 13189 transitions. [2020-10-14 08:29:25,538 INFO L78 Accepts]: Start accepts. Automaton has 8667 states and 13189 transitions. Word has length 247 [2020-10-14 08:29:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:25,538 INFO L479 AbstractCegarLoop]: Abstraction has 8667 states and 13189 transitions. [2020-10-14 08:29:25,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8667 states and 13189 transitions. [2020-10-14 08:29:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 08:29:25,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:25,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:25,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:29:25,552 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:25,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1176293328, now seen corresponding path program 1 times [2020-10-14 08:29:25,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:25,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703594893] [2020-10-14 08:29:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:25,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:30,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:30,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 08:29:30,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:29:30,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 08:29:30,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:30,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:30,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:29:30,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:29:30,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 08:29:30,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:31,211 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:29:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:31,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:31,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:31,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:29:31,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:31,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:31,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703594893] [2020-10-14 08:29:31,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:31,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:29:31,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850392794] [2020-10-14 08:29:31,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:29:31,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:31,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:29:31,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:31,325 INFO L87 Difference]: Start difference. First operand 8667 states and 13189 transitions. Second operand 5 states. [2020-10-14 08:29:37,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:37,621 INFO L93 Difference]: Finished difference Result 24679 states and 37535 transitions. [2020-10-14 08:29:37,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:37,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-14 08:29:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:37,647 INFO L225 Difference]: With dead ends: 24679 [2020-10-14 08:29:37,647 INFO L226 Difference]: Without dead ends: 16597 [2020-10-14 08:29:37,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:29:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16597 states. [2020-10-14 08:29:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16597 to 16595. [2020-10-14 08:29:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16595 states. [2020-10-14 08:29:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16595 states to 16595 states and 25085 transitions. [2020-10-14 08:29:38,619 INFO L78 Accepts]: Start accepts. Automaton has 16595 states and 25085 transitions. Word has length 248 [2020-10-14 08:29:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:38,619 INFO L479 AbstractCegarLoop]: Abstraction has 16595 states and 25085 transitions. [2020-10-14 08:29:38,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:29:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 16595 states and 25085 transitions. [2020-10-14 08:29:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 08:29:38,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:38,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:38,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:29:38,637 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:38,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1839001191, now seen corresponding path program 1 times [2020-10-14 08:29:38,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:38,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821340260] [2020-10-14 08:29:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:39,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:39,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:43,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:43,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 08:29:43,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:29:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:29:43,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:43,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 08:29:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 08:29:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:44,134 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:29:44,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:44,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:44,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:44,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:44,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:44,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:29:44,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:44,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:44,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821340260] [2020-10-14 08:29:44,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:44,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:44,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964945946] [2020-10-14 08:29:44,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:44,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:44,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:44,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:44,231 INFO L87 Difference]: Start difference. First operand 16595 states and 25085 transitions. Second operand 4 states. [2020-10-14 08:29:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:51,770 INFO L93 Difference]: Finished difference Result 48255 states and 72853 transitions. [2020-10-14 08:29:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:29:51,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2020-10-14 08:29:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:51,816 INFO L225 Difference]: With dead ends: 48255 [2020-10-14 08:29:51,816 INFO L226 Difference]: Without dead ends: 32397 [2020-10-14 08:29:51,850 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 08:29:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32397 states. [2020-10-14 08:29:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32397 to 32395. [2020-10-14 08:29:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32395 states. [2020-10-14 08:29:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32395 states to 32395 states and 48643 transitions. [2020-10-14 08:29:53,755 INFO L78 Accepts]: Start accepts. Automaton has 32395 states and 48643 transitions. Word has length 250 [2020-10-14 08:29:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:53,755 INFO L479 AbstractCegarLoop]: Abstraction has 32395 states and 48643 transitions. [2020-10-14 08:29:53,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 32395 states and 48643 transitions. [2020-10-14 08:29:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 08:29:53,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:53,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:53,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:29:53,790 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:53,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1474706404, now seen corresponding path program 1 times [2020-10-14 08:29:53,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:53,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582109959] [2020-10-14 08:29:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:54,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:58,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:58,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 08:29:58,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:29:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:29:58,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:58,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:29:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:29:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 08:29:58,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:59,389 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:29:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:59,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:59,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:59,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:29:59,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:59,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:59,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582109959] [2020-10-14 08:29:59,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:59,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:29:59,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342520335] [2020-10-14 08:29:59,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:29:59,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:59,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:29:59,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:59,488 INFO L87 Difference]: Start difference. First operand 32395 states and 48643 transitions. Second operand 5 states. [2020-10-14 08:30:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:09,163 INFO L93 Difference]: Finished difference Result 92799 states and 138757 transitions. [2020-10-14 08:30:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:09,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-14 08:30:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:09,248 INFO L225 Difference]: With dead ends: 92799 [2020-10-14 08:30:09,249 INFO L226 Difference]: Without dead ends: 62717 [2020-10-14 08:30:09,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:30:09,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62717 states. [2020-10-14 08:30:13,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62717 to 62715. [2020-10-14 08:30:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62715 states. [2020-10-14 08:30:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62715 states to 62715 states and 93411 transitions. [2020-10-14 08:30:13,395 INFO L78 Accepts]: Start accepts. Automaton has 62715 states and 93411 transitions. Word has length 250 [2020-10-14 08:30:13,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:13,396 INFO L479 AbstractCegarLoop]: Abstraction has 62715 states and 93411 transitions. [2020-10-14 08:30:13,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:30:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 62715 states and 93411 transitions. [2020-10-14 08:30:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 08:30:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:13,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:13,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:30:13,446 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1491013048, now seen corresponding path program 1 times [2020-10-14 08:30:13,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:13,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695023241] [2020-10-14 08:30:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:14,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:18,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:18,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 08:30:18,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:30:18,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 08:30:18,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:18,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 08:30:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:30:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:18,939 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:30:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:18,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:18,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:18,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:30:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:18,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:18,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695023241] [2020-10-14 08:30:18,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:18,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:18,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789564412] [2020-10-14 08:30:18,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:18,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:18,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:18,995 INFO L87 Difference]: Start difference. First operand 62715 states and 93411 transitions. Second operand 4 states. [2020-10-14 08:30:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:32,904 INFO L93 Difference]: Finished difference Result 184055 states and 273405 transitions. [2020-10-14 08:30:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:32,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 252 [2020-10-14 08:30:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:33,034 INFO L225 Difference]: With dead ends: 184055 [2020-10-14 08:30:33,034 INFO L226 Difference]: Without dead ends: 123349 [2020-10-14 08:30:33,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123349 states. [2020-10-14 08:30:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123349 to 63379. [2020-10-14 08:30:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63379 states. [2020-10-14 08:30:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63379 states to 63379 states and 94267 transitions. [2020-10-14 08:30:37,765 INFO L78 Accepts]: Start accepts. Automaton has 63379 states and 94267 transitions. Word has length 252 [2020-10-14 08:30:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:37,766 INFO L479 AbstractCegarLoop]: Abstraction has 63379 states and 94267 transitions. [2020-10-14 08:30:37,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:37,766 INFO L276 IsEmpty]: Start isEmpty. Operand 63379 states and 94267 transitions. [2020-10-14 08:30:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 08:30:37,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:37,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:37,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:30:37,828 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:37,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:37,829 INFO L82 PathProgramCache]: Analyzing trace with hash 995733337, now seen corresponding path program 1 times [2020-10-14 08:30:37,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:37,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450167538] [2020-10-14 08:30:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:42,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:42,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 08:30:42,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:30:42,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:30:42,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:42,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 08:30:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:30:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:43,304 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:30:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:43,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:43,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:43,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:43,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:30:43,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:43,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:43,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:43,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:43,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:43,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:43,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450167538] [2020-10-14 08:30:43,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:43,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:43,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609116555] [2020-10-14 08:30:43,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:43,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:43,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:43,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:43,364 INFO L87 Difference]: Start difference. First operand 63379 states and 94267 transitions. Second operand 4 states. [2020-10-14 08:30:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:59,505 INFO L93 Difference]: Finished difference Result 185095 states and 274741 transitions. [2020-10-14 08:30:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:59,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2020-10-14 08:30:59,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:59,656 INFO L225 Difference]: With dead ends: 185095 [2020-10-14 08:30:59,657 INFO L226 Difference]: Without dead ends: 124357 [2020-10-14 08:30:59,715 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 08:30:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124357 states. [2020-10-14 08:31:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124357 to 64387. [2020-10-14 08:31:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64387 states. [2020-10-14 08:31:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64387 states to 64387 states and 95619 transitions. [2020-10-14 08:31:04,816 INFO L78 Accepts]: Start accepts. Automaton has 64387 states and 95619 transitions. Word has length 253 [2020-10-14 08:31:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:04,817 INFO L479 AbstractCegarLoop]: Abstraction has 64387 states and 95619 transitions. [2020-10-14 08:31:04,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:31:04,817 INFO L276 IsEmpty]: Start isEmpty. Operand 64387 states and 95619 transitions. [2020-10-14 08:31:04,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 08:31:04,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:04,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:04,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:31:04,864 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:04,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:04,865 INFO L82 PathProgramCache]: Analyzing trace with hash 511981451, now seen corresponding path program 1 times [2020-10-14 08:31:04,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:04,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600963112] [2020-10-14 08:31:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:09,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:09,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 08:31:09,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:31:09,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 08:31:09,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:09,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:31:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:31:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 08:31:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:10,476 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 08:31:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:10,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:10,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:31:10,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:10,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:31:10,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600963112] [2020-10-14 08:31:10,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:10,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:31:10,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463413306] [2020-10-14 08:31:10,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:31:10,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:10,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:31:10,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:31:10,603 INFO L87 Difference]: Start difference. First operand 64387 states and 95619 transitions. Second operand 5 states.