/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:14:52,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:14:52,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:14:52,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:14:52,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:14:52,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:14:52,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:14:52,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:14:52,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:14:52,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:14:52,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:14:52,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:14:52,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:14:52,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:14:52,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:14:52,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:14:52,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:14:52,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:14:52,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:14:52,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:14:52,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:14:52,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:14:52,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:14:52,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:14:52,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:14:52,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:14:52,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:14:52,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:14:52,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:14:52,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:14:52,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:14:52,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:14:52,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:14:52,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:14:52,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:14:52,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:14:52,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:14:52,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:14:52,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:14:52,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:14:52,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:14:52,426 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 [2020-10-15 04:14:52,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:14:52,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:14:52,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:14:52,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:14:52,467 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:14:52,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:14:52,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:14:52,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:14:52,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:14:52,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:14:52,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:14:52,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:14:52,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:14:52,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:14:52,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:14:52,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:14:52,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:14:52,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:14:52,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:14:52,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:14:52,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:14:52,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:14:52,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:14:52,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:14:52,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:14:52,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:14:52,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:14:52,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:14:52,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:14:52,473 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:14:52,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:14:52,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:14:52,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:14:52,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:14:52,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:14:52,782 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:14:52,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a66611c81/c316698d70c84972abe75e1770aeee94/FLAGda88c4c75 [2020-10-15 04:14:53,594 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:14:53,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:14:53,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a66611c81/c316698d70c84972abe75e1770aeee94/FLAGda88c4c75 [2020-10-15 04:14:53,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a66611c81/c316698d70c84972abe75e1770aeee94 [2020-10-15 04:14:53,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:14:53,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:14:53,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:14:53,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:14:53,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:14:53,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:14:53" (1/1) ... [2020-10-15 04:14:53,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0aa04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:53, skipping insertion in model container [2020-10-15 04:14:53,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:14:53" (1/1) ... [2020-10-15 04:14:53,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:14:53,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:14:55,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:14:55,595 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:14:56,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:14:56,876 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:14:56,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56 WrapperNode [2020-10-15 04:14:56,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:14:56,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:14:56,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:14:56,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:14:56,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (1/1) ... [2020-10-15 04:14:56,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (1/1) ... [2020-10-15 04:14:56,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (1/1) ... [2020-10-15 04:14:56,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (1/1) ... [2020-10-15 04:14:57,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (1/1) ... [2020-10-15 04:14:57,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (1/1) ... [2020-10-15 04:14:57,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (1/1) ... [2020-10-15 04:14:57,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:14:57,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:14:57,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:14:57,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:14:57,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (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 [2020-10-15 04:14:57,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:14:57,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:14:57,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:14:57,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:14:57,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:14:57,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:14:57,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:14:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:14:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:14:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:14:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:14:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:14:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:14:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:14:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:14:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:14:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:14:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:14:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:14:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:14:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:14:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:15:01,361 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:15:01,361 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:15:01,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:01 BoogieIcfgContainer [2020-10-15 04:15:01,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:15:01,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:15:01,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:15:01,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:15:01,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:14:53" (1/3) ... [2020-10-15 04:15:01,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212688d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:01, skipping insertion in model container [2020-10-15 04:15:01,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:14:56" (2/3) ... [2020-10-15 04:15:01,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212688d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:01, skipping insertion in model container [2020-10-15 04:15:01,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:01" (3/3) ... [2020-10-15 04:15:01,380 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:15:01,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:15:01,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 04:15:01,413 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 04:15:01,446 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:15:01,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:15:01,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:15:01,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:15:01,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:15:01,447 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:15:01,447 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:15:01,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:15:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states. [2020-10-15 04:15:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-15 04:15:01,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:01,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:15:01,531 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:01,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1064488228, now seen corresponding path program 1 times [2020-10-15 04:15:01,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:01,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081208014] [2020-10-15 04:15:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:07,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:08,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:08,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-15 04:15:08,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:15:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-15 04:15:08,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:08,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:15:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:15:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-15 04:15:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:15:10,406 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-15 04:15:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:10,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:10,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:10,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 04:15:10,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:10,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:15:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:15:11,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081208014] [2020-10-15 04:15:11,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:11,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:15:11,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669991450] [2020-10-15 04:15:11,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:15:11,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:11,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:15:11,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:15:11,203 INFO L87 Difference]: Start difference. First operand 1484 states. Second operand 5 states. [2020-10-15 04:15:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:29,520 INFO L93 Difference]: Finished difference Result 4356 states and 7864 transitions. [2020-10-15 04:15:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:15:29,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 484 [2020-10-15 04:15:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:29,588 INFO L225 Difference]: With dead ends: 4356 [2020-10-15 04:15:29,588 INFO L226 Difference]: Without dead ends: 2905 [2020-10-15 04:15:29,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:29,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-10-15 04:15:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2864. [2020-10-15 04:15:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2020-10-15 04:15:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4717 transitions. [2020-10-15 04:15:29,876 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4717 transitions. Word has length 484 [2020-10-15 04:15:29,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:15:29,882 INFO L479 AbstractCegarLoop]: Abstraction has 2864 states and 4717 transitions. [2020-10-15 04:15:29,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:15:29,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4717 transitions. [2020-10-15 04:15:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-15 04:15:29,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:29,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:15:29,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:15:29,902 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:29,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:29,903 INFO L82 PathProgramCache]: Analyzing trace with hash -333019984, now seen corresponding path program 1 times [2020-10-15 04:15:29,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:29,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011728525] [2020-10-15 04:15:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:30,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:32,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:32,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:33,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:34,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:35,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:35,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-15 04:15:35,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:15:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-15 04:15:35,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:35,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:15:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 04:15:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-15 04:15:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 04:15:36,835 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-15 04:15:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:36,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:36,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:36,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:36,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:15:36,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:36,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:15:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:15:37,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011728525] [2020-10-15 04:15:37,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:37,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:15:37,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462403316] [2020-10-15 04:15:37,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:15:37,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:37,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:15:37,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:15:37,593 INFO L87 Difference]: Start difference. First operand 2864 states and 4717 transitions. Second operand 4 states. [2020-10-15 04:15:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:58,336 INFO L93 Difference]: Finished difference Result 8247 states and 13533 transitions. [2020-10-15 04:15:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:15:58,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 486 [2020-10-15 04:15:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:58,368 INFO L225 Difference]: With dead ends: 8247 [2020-10-15 04:15:58,369 INFO L226 Difference]: Without dead ends: 5595 [2020-10-15 04:15:58,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:15:58,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2020-10-15 04:15:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5551. [2020-10-15 04:15:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5551 states. [2020-10-15 04:15:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 9105 transitions. [2020-10-15 04:15:58,590 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 9105 transitions. Word has length 486 [2020-10-15 04:15:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:15:58,592 INFO L479 AbstractCegarLoop]: Abstraction has 5551 states and 9105 transitions. [2020-10-15 04:15:58,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:15:58,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 9105 transitions. [2020-10-15 04:15:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-15 04:15:58,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:58,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:15:58,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:15:58,612 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:58,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1186396932, now seen corresponding path program 1 times [2020-10-15 04:15:58,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:58,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219066217] [2020-10-15 04:15:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:00,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:01,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:03,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:03,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-15 04:16:03,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:16:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-15 04:16:03,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:03,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:16:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:16:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-15 04:16:03,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:04,992 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-15 04:16:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:05,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:05,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:05,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:05,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:16:05,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:05,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:05,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:05,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219066217] [2020-10-15 04:16:05,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:05,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:16:05,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810081671] [2020-10-15 04:16:05,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:16:05,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:05,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:16:05,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:05,536 INFO L87 Difference]: Start difference. First operand 5551 states and 9105 transitions. Second operand 5 states. [2020-10-15 04:16:20,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:20,640 INFO L93 Difference]: Finished difference Result 16229 states and 26557 transitions. [2020-10-15 04:16:20,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:20,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 487 [2020-10-15 04:16:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:20,691 INFO L225 Difference]: With dead ends: 16229 [2020-10-15 04:16:20,692 INFO L226 Difference]: Without dead ends: 10849 [2020-10-15 04:16:20,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:16:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10849 states. [2020-10-15 04:16:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10849 to 10751. [2020-10-15 04:16:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10751 states. [2020-10-15 04:16:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10751 states to 10751 states and 17529 transitions. [2020-10-15 04:16:21,144 INFO L78 Accepts]: Start accepts. Automaton has 10751 states and 17529 transitions. Word has length 487 [2020-10-15 04:16:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:21,145 INFO L479 AbstractCegarLoop]: Abstraction has 10751 states and 17529 transitions. [2020-10-15 04:16:21,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10751 states and 17529 transitions. [2020-10-15 04:16:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-15 04:16:21,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:21,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:21,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:16:21,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:21,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1574012752, now seen corresponding path program 1 times [2020-10-15 04:16:21,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:21,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964325693] [2020-10-15 04:16:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:22,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:26,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:26,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-15 04:16:26,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:16:26,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:16:26,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:26,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:16:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-15 04:16:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-15 04:16:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:27,766 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-15 04:16:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:27,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:27,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 04:16:27,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:27,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:28,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964325693] [2020-10-15 04:16:28,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:28,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:16:28,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977493560] [2020-10-15 04:16:28,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:16:28,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:16:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:16:28,061 INFO L87 Difference]: Start difference. First operand 10751 states and 17529 transitions. Second operand 4 states. [2020-10-15 04:16:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:48,404 INFO L93 Difference]: Finished difference Result 31692 states and 51611 transitions. [2020-10-15 04:16:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:16:48,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 489 [2020-10-15 04:16:48,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:48,467 INFO L225 Difference]: With dead ends: 31692 [2020-10-15 04:16:48,468 INFO L226 Difference]: Without dead ends: 21269 [2020-10-15 04:16:48,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:16:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21269 states. [2020-10-15 04:16:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21269 to 21230. [2020-10-15 04:16:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21230 states. [2020-10-15 04:16:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21230 states to 21230 states and 34490 transitions. [2020-10-15 04:16:49,250 INFO L78 Accepts]: Start accepts. Automaton has 21230 states and 34490 transitions. Word has length 489 [2020-10-15 04:16:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:49,251 INFO L479 AbstractCegarLoop]: Abstraction has 21230 states and 34490 transitions. [2020-10-15 04:16:49,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:16:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 21230 states and 34490 transitions. [2020-10-15 04:16:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-15 04:16:49,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:49,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:49,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:16:49,317 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:49,318 INFO L82 PathProgramCache]: Analyzing trace with hash -899779275, now seen corresponding path program 1 times [2020-10-15 04:16:49,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:49,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140080333] [2020-10-15 04:16:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:51,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:53,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:54,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:54,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-15 04:16:54,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:16:54,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-15 04:16:54,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:54,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:16:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:16:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-15 04:16:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:16:55,710 WARN L193 SmtUtils]: Spent 970.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-15 04:16:55,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:55,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:55,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:55,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:55,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:16:55,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:55,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:56,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140080333] [2020-10-15 04:16:56,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:56,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:16:56,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31118075] [2020-10-15 04:16:56,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:16:56,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:16:56,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:56,075 INFO L87 Difference]: Start difference. First operand 21230 states and 34490 transitions. Second operand 5 states. [2020-10-15 04:17:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:17,275 INFO L93 Difference]: Finished difference Result 62331 states and 101066 transitions. [2020-10-15 04:17:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:17,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 489 [2020-10-15 04:17:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:17,366 INFO L225 Difference]: With dead ends: 62331 [2020-10-15 04:17:17,366 INFO L226 Difference]: Without dead ends: 42015 [2020-10-15 04:17:17,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42015 states. [2020-10-15 04:17:18,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42015 to 41899. [2020-10-15 04:17:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41899 states. [2020-10-15 04:17:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41899 states to 41899 states and 67782 transitions. [2020-10-15 04:17:18,813 INFO L78 Accepts]: Start accepts. Automaton has 41899 states and 67782 transitions. Word has length 489 [2020-10-15 04:17:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:18,813 INFO L479 AbstractCegarLoop]: Abstraction has 41899 states and 67782 transitions. [2020-10-15 04:17:18,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 41899 states and 67782 transitions. [2020-10-15 04:17:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-15 04:17:18,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:18,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:18,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:17:18,899 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:18,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:18,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1177970289, now seen corresponding path program 1 times [2020-10-15 04:17:18,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:18,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38465408] [2020-10-15 04:17:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:19,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:20,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:23,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:23,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:24,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:24,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-15 04:17:24,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:17:24,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-15 04:17:24,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:24,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:24,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:17:24,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:17:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-15 04:17:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:25,162 WARN L193 SmtUtils]: Spent 975.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-15 04:17:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:25,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:25,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:25,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:25,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:17:25,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:25,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:25,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38465408] [2020-10-15 04:17:25,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:25,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:17:25,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796633442] [2020-10-15 04:17:25,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:17:25,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:25,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:17:25,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:25,451 INFO L87 Difference]: Start difference. First operand 41899 states and 67782 transitions. Second operand 4 states. [2020-10-15 04:17:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:50,028 INFO L93 Difference]: Finished difference Result 124015 states and 200460 transitions. [2020-10-15 04:17:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:17:50,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 493 [2020-10-15 04:17:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:50,194 INFO L225 Difference]: With dead ends: 124015 [2020-10-15 04:17:50,194 INFO L226 Difference]: Without dead ends: 82771 [2020-10-15 04:17:50,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:50,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82771 states. [2020-10-15 04:17:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82771 to 82583. [2020-10-15 04:17:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82583 states. [2020-10-15 04:17:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82583 states to 82583 states and 133032 transitions. [2020-10-15 04:17:55,197 INFO L78 Accepts]: Start accepts. Automaton has 82583 states and 133032 transitions. Word has length 493 [2020-10-15 04:17:55,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:55,198 INFO L479 AbstractCegarLoop]: Abstraction has 82583 states and 133032 transitions. [2020-10-15 04:17:55,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:17:55,198 INFO L276 IsEmpty]: Start isEmpty. Operand 82583 states and 133032 transitions. [2020-10-15 04:17:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-15 04:17:55,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:55,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:55,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:17:55,293 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:55,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:55,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1064639978, now seen corresponding path program 1 times [2020-10-15 04:17:55,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:55,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262172317] [2020-10-15 04:17:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:59,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:00,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:00,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-15 04:18:00,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 04:18:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-15 04:18:00,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:00,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-10-15 04:18:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:01,542 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-15 04:18:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:01,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:01,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:01,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:18:01,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:01,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:02,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262172317] [2020-10-15 04:18:02,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:02,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:02,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809021953] [2020-10-15 04:18:02,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:02,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:02,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:02,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:02,093 INFO L87 Difference]: Start difference. First operand 82583 states and 133032 transitions. Second operand 5 states. [2020-10-15 04:18:22,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:22,206 INFO L93 Difference]: Finished difference Result 178538 states and 288057 transitions. [2020-10-15 04:18:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:22,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-10-15 04:18:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:22,347 INFO L225 Difference]: With dead ends: 178538 [2020-10-15 04:18:22,347 INFO L226 Difference]: Without dead ends: 98990 [2020-10-15 04:18:22,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98990 states. [2020-10-15 04:18:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98990 to 82231. [2020-10-15 04:18:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82231 states. [2020-10-15 04:18:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82231 states to 82231 states and 132264 transitions. [2020-10-15 04:18:28,141 INFO L78 Accepts]: Start accepts. Automaton has 82231 states and 132264 transitions. Word has length 493 [2020-10-15 04:18:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:28,142 INFO L479 AbstractCegarLoop]: Abstraction has 82231 states and 132264 transitions. [2020-10-15 04:18:28,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 82231 states and 132264 transitions. [2020-10-15 04:18:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-15 04:18:28,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:28,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:28,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:18:28,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:28,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:28,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1382367964, now seen corresponding path program 1 times [2020-10-15 04:18:28,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:28,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459320669] [2020-10-15 04:18:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:29,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking...