/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_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:09:32,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:09:32,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:09:32,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:09:32,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:09:32,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:09:32,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:09:32,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:09:32,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:09:32,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:09:32,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:09:32,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:09:32,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:09:32,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:09:32,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:09:32,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:09:32,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:09:32,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:09:32,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:09:32,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:09:32,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:09:32,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:09:32,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:09:32,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:09:32,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:09:32,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:09:32,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:09:32,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:09:32,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:09:32,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:09:32,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:09:32,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:09:32,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:09:32,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:09:32,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:09:32,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:09:32,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:09:32,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:09:32,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:09:32,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:09:32,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:09:32,183 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 03:09:32,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:09:32,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:09:32,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:09:32,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:09:32,240 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:09:32,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:09:32,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:09:32,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:09:32,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:09:32,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:09:32,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:09:32,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:09:32,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:09:32,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:09:32,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:09:32,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:09:32,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:09:32,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:09:32,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:09:32,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:09:32,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:09:32,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:09:32,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:09:32,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:09:32,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:09:32,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:09:32,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:09:32,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:09:32,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:09:32,247 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 03:09:32,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:09:32,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:09:32,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:09:32,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:09:32,622 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:09:32,622 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:09:32,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59a4b6e1/f5aa0f4d230d46bdaac44ab555920b33/FLAGae9e48184 [2020-10-15 03:09:33,401 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:09:33,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:09:33,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59a4b6e1/f5aa0f4d230d46bdaac44ab555920b33/FLAGae9e48184 [2020-10-15 03:09:33,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59a4b6e1/f5aa0f4d230d46bdaac44ab555920b33 [2020-10-15 03:09:33,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:09:33,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:09:33,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:09:33,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:09:33,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:09:33,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:33" (1/1) ... [2020-10-15 03:09:33,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3336fb4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:33, skipping insertion in model container [2020-10-15 03:09:33,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:33" (1/1) ... [2020-10-15 03:09:33,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:09:33,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:09:34,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:09:34,563 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:09:34,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:09:34,877 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:09:34,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34 WrapperNode [2020-10-15 03:09:34,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:09:34,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:09:34,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:09:34,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:09:34,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (1/1) ... [2020-10-15 03:09:34,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (1/1) ... [2020-10-15 03:09:34,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (1/1) ... [2020-10-15 03:09:34,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (1/1) ... [2020-10-15 03:09:35,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (1/1) ... [2020-10-15 03:09:35,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (1/1) ... [2020-10-15 03:09:35,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (1/1) ... [2020-10-15 03:09:35,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:09:35,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:09:35,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:09:35,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:09:35,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (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 03:09:35,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:09:35,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:09:35,206 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:09:35,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:09:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:09:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:09:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:09:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:09:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:09:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:09:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:09:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:09:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:09:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:09:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:09:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:09:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:09:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:09:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:09:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:09:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:09:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:09:37,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:09:37,682 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:09:37,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:37 BoogieIcfgContainer [2020-10-15 03:09:37,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:09:37,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:09:37,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:09:37,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:09:37,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:33" (1/3) ... [2020-10-15 03:09:37,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e262dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:37, skipping insertion in model container [2020-10-15 03:09:37,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:34" (2/3) ... [2020-10-15 03:09:37,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e262dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:37, skipping insertion in model container [2020-10-15 03:09:37,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:37" (3/3) ... [2020-10-15 03:09:37,700 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:09:37,708 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:09:37,718 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:09:37,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:09:37,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:09:37,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:09:37,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:09:37,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:09:37,775 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:09:37,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:09:37,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:09:37,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:09:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states. [2020-10-15 03:09:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-15 03:09:37,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:37,846 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] [2020-10-15 03:09:37,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:37,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1869622292, now seen corresponding path program 1 times [2020-10-15 03:09:37,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:37,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208827814] [2020-10-15 03:09:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:40,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:43,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:43,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-15 03:09:43,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:09:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5183 [2020-10-15 03:09:43,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:43,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:09:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-15 03:09:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:09:43,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:09:44,802 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:09:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:44,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:44,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:44,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:44,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 03:09:44,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:44,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:44,969 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 03:09:44,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208827814] [2020-10-15 03:09:44,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:44,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:09:44,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262530987] [2020-10-15 03:09:44,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:09:44,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:44,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:09:44,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:09:44,997 INFO L87 Difference]: Start difference. First operand 741 states. Second operand 4 states. [2020-10-15 03:09:45,952 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-15 03:09:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:51,741 INFO L93 Difference]: Finished difference Result 1118 states and 1994 transitions. [2020-10-15 03:09:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:51,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-10-15 03:09:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:51,791 INFO L225 Difference]: With dead ends: 1118 [2020-10-15 03:09:51,792 INFO L226 Difference]: Without dead ends: 916 [2020-10-15 03:09:51,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:51,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-15 03:09:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2020-10-15 03:09:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-10-15 03:09:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1592 transitions. [2020-10-15 03:09:51,967 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1592 transitions. Word has length 208 [2020-10-15 03:09:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:51,973 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1592 transitions. [2020-10-15 03:09:51,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:09:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1592 transitions. [2020-10-15 03:09:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 03:09:51,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:51,992 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] [2020-10-15 03:09:51,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:09:51,994 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:51,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:51,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1785793502, now seen corresponding path program 1 times [2020-10-15 03:09:51,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:51,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128761696] [2020-10-15 03:09:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:57,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-15 03:09:57,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:09:57,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-15 03:09:57,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:57,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:57,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:09:57,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:09:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-15 03:09:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 03:09:58,474 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:09:58,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:58,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:58,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:09:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:58,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:58,717 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 03:09:58,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128761696] [2020-10-15 03:09:58,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:58,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:09:58,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376913645] [2020-10-15 03:09:58,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:09:58,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:58,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:09:58,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:58,722 INFO L87 Difference]: Start difference. First operand 914 states and 1592 transitions. Second operand 5 states. [2020-10-15 03:10:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:04,956 INFO L93 Difference]: Finished difference Result 2695 states and 4699 transitions. [2020-10-15 03:10:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:04,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-15 03:10:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:04,978 INFO L225 Difference]: With dead ends: 2695 [2020-10-15 03:10:04,979 INFO L226 Difference]: Without dead ends: 1800 [2020-10-15 03:10:04,991 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 03:10:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2020-10-15 03:10:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1798. [2020-10-15 03:10:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2020-10-15 03:10:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 3122 transitions. [2020-10-15 03:10:05,121 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 3122 transitions. Word has length 212 [2020-10-15 03:10:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:05,123 INFO L479 AbstractCegarLoop]: Abstraction has 1798 states and 3122 transitions. [2020-10-15 03:10:05,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:10:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 3122 transitions. [2020-10-15 03:10:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 03:10:05,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:05,134 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] [2020-10-15 03:10:05,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:10:05,134 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:05,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:05,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1535203241, now seen corresponding path program 1 times [2020-10-15 03:10:05,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:05,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460919889] [2020-10-15 03:10:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:10,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-15 03:10:10,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:10:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-15 03:10:10,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:10,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:10:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-15 03:10:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:11,921 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:10:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:11,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:11,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:11,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:11,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:10:11,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:11,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:12,205 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 03:10:12,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460919889] [2020-10-15 03:10:12,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:12,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:12,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016115206] [2020-10-15 03:10:12,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:12,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:12,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:12,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:12,208 INFO L87 Difference]: Start difference. First operand 1798 states and 3122 transitions. Second operand 5 states. [2020-10-15 03:10:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:20,176 INFO L93 Difference]: Finished difference Result 5130 states and 8893 transitions. [2020-10-15 03:10:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:20,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-15 03:10:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:20,196 INFO L225 Difference]: With dead ends: 5130 [2020-10-15 03:10:20,196 INFO L226 Difference]: Without dead ends: 3483 [2020-10-15 03:10:20,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:10:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2020-10-15 03:10:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3481. [2020-10-15 03:10:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3481 states. [2020-10-15 03:10:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 6021 transitions. [2020-10-15 03:10:20,399 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 6021 transitions. Word has length 212 [2020-10-15 03:10:20,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:20,400 INFO L479 AbstractCegarLoop]: Abstraction has 3481 states and 6021 transitions. [2020-10-15 03:10:20,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:10:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 6021 transitions. [2020-10-15 03:10:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-15 03:10:20,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:20,414 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] [2020-10-15 03:10:20,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:10:20,414 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:20,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1643815398, now seen corresponding path program 1 times [2020-10-15 03:10:20,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:20,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483251769] [2020-10-15 03:10:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:20,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:23,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:25,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-15 03:10:25,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:10:25,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:10:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:25,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:10:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-15 03:10:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:26,727 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:10:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:26,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:26,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:26,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:26,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:10:26,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:26,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:26,894 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 03:10:26,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483251769] [2020-10-15 03:10:26,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:26,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:26,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271549723] [2020-10-15 03:10:26,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:26,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:26,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:26,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:26,896 INFO L87 Difference]: Start difference. First operand 3481 states and 6021 transitions. Second operand 5 states. [2020-10-15 03:10:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:32,843 INFO L93 Difference]: Finished difference Result 10203 states and 17643 transitions. [2020-10-15 03:10:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:32,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-15 03:10:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:32,878 INFO L225 Difference]: With dead ends: 10203 [2020-10-15 03:10:32,878 INFO L226 Difference]: Without dead ends: 6843 [2020-10-15 03:10:32,887 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 03:10:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6843 states. [2020-10-15 03:10:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6843 to 6841. [2020-10-15 03:10:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6841 states. [2020-10-15 03:10:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6841 states to 6841 states and 11778 transitions. [2020-10-15 03:10:33,313 INFO L78 Accepts]: Start accepts. Automaton has 6841 states and 11778 transitions. Word has length 213 [2020-10-15 03:10:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:33,313 INFO L479 AbstractCegarLoop]: Abstraction has 6841 states and 11778 transitions. [2020-10-15 03:10:33,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:10:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6841 states and 11778 transitions. [2020-10-15 03:10:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-15 03:10:33,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:33,331 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] [2020-10-15 03:10:33,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:10:33,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash 467807010, now seen corresponding path program 1 times [2020-10-15 03:10:33,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:33,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798680444] [2020-10-15 03:10:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:34,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:34,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:35,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:37,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:38,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:38,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-15 03:10:38,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:10:38,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 03:10:38,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:38,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:10:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-15 03:10:38,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:39,518 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:10:39,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:39,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:39,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:39,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:39,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:10:39,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:39,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:39,669 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 03:10:39,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798680444] [2020-10-15 03:10:39,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:39,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:39,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337209212] [2020-10-15 03:10:39,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:39,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:39,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:39,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:39,672 INFO L87 Difference]: Start difference. First operand 6841 states and 11778 transitions. Second operand 5 states. [2020-10-15 03:10:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:45,713 INFO L93 Difference]: Finished difference Result 20142 states and 34670 transitions. [2020-10-15 03:10:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:45,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-15 03:10:45,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:45,786 INFO L225 Difference]: With dead ends: 20142 [2020-10-15 03:10:45,786 INFO L226 Difference]: Without dead ends: 13424 [2020-10-15 03:10:45,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:10:45,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13424 states. [2020-10-15 03:10:46,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13424 to 13422. [2020-10-15 03:10:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13422 states. [2020-10-15 03:10:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13422 states to 13422 states and 23007 transitions. [2020-10-15 03:10:46,643 INFO L78 Accepts]: Start accepts. Automaton has 13422 states and 23007 transitions. Word has length 214 [2020-10-15 03:10:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:46,644 INFO L479 AbstractCegarLoop]: Abstraction has 13422 states and 23007 transitions. [2020-10-15 03:10:46,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:10:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 13422 states and 23007 transitions. [2020-10-15 03:10:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-15 03:10:46,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:46,674 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] [2020-10-15 03:10:46,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:10:46,675 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:46,675 INFO L82 PathProgramCache]: Analyzing trace with hash -803277375, now seen corresponding path program 1 times [2020-10-15 03:10:46,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:46,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119595581] [2020-10-15 03:10:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:47,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:47,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:47,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:48,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:51,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-15 03:10:51,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:10:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-15 03:10:51,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:51,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:10:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-15 03:10:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:53,210 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:10:53,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:53,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:53,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:53,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:10:53,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:53,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:53,333 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 03:10:53,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119595581] [2020-10-15 03:10:53,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:53,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:53,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088046261] [2020-10-15 03:10:53,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:53,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:53,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:53,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:53,336 INFO L87 Difference]: Start difference. First operand 13422 states and 23007 transitions. Second operand 5 states. [2020-10-15 03:11:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:11:00,668 INFO L93 Difference]: Finished difference Result 38933 states and 66648 transitions. [2020-10-15 03:11:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:11:00,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-15 03:11:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:11:00,758 INFO L225 Difference]: With dead ends: 38933 [2020-10-15 03:11:00,758 INFO L226 Difference]: Without dead ends: 26253 [2020-10-15 03:11:00,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:11:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26253 states. [2020-10-15 03:11:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26253 to 26251. [2020-10-15 03:11:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26251 states. [2020-10-15 03:11:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26251 states to 26251 states and 44718 transitions. [2020-10-15 03:11:03,091 INFO L78 Accepts]: Start accepts. Automaton has 26251 states and 44718 transitions. Word has length 214 [2020-10-15 03:11:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:03,092 INFO L479 AbstractCegarLoop]: Abstraction has 26251 states and 44718 transitions. [2020-10-15 03:11:03,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:11:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 26251 states and 44718 transitions. [2020-10-15 03:11:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-15 03:11:03,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:03,135 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] [2020-10-15 03:11:03,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:11:03,136 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:03,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:03,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1041616828, now seen corresponding path program 1 times [2020-10-15 03:11:03,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:03,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137152260] [2020-10-15 03:11:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:03,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:08,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:08,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-15 03:11:08,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:11:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-15 03:11:08,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:08,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:11:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:11:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-15 03:11:08,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:09,224 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:11:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:09,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:09,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:09,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:11:09,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:09,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:11:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:11:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:09,341 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 03:11:09,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137152260] [2020-10-15 03:11:09,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:09,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:11:09,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816545221] [2020-10-15 03:11:09,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:11:09,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:09,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:11:09,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:11:09,343 INFO L87 Difference]: Start difference. First operand 26251 states and 44718 transitions. Second operand 5 states. [2020-10-15 03:11:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:11:17,884 INFO L93 Difference]: Finished difference Result 76988 states and 131139 transitions. [2020-10-15 03:11:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:11:17,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-15 03:11:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:11:17,993 INFO L225 Difference]: With dead ends: 76988 [2020-10-15 03:11:17,993 INFO L226 Difference]: Without dead ends: 51576 [2020-10-15 03:11:18,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:11:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51576 states. [2020-10-15 03:11:22,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51576 to 51574. [2020-10-15 03:11:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51574 states. [2020-10-15 03:11:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51574 states to 51574 states and 87442 transitions. [2020-10-15 03:11:22,525 INFO L78 Accepts]: Start accepts. Automaton has 51574 states and 87442 transitions. Word has length 215 [2020-10-15 03:11:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:22,526 INFO L479 AbstractCegarLoop]: Abstraction has 51574 states and 87442 transitions. [2020-10-15 03:11:22,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:11:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 51574 states and 87442 transitions. [2020-10-15 03:11:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-15 03:11:22,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:22,583 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] [2020-10-15 03:11:22,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:11:22,583 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:22,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:22,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1877586114, now seen corresponding path program 1 times [2020-10-15 03:11:22,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:22,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706141586] [2020-10-15 03:11:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:22,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:25,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:27,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:27,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-15 03:11:27,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:11:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-15 03:11:27,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:27,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:11:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:11:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-15 03:11:27,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:28,784 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:11:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:28,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:28,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:28,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:28,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:11:28,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:28,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:11:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:11:28,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:28,908 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 03:11:28,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706141586] [2020-10-15 03:11:28,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:28,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:11:28,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536300498] [2020-10-15 03:11:28,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:11:28,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:28,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:11:28,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:11:28,910 INFO L87 Difference]: Start difference. First operand 51574 states and 87442 transitions. Second operand 8 states. [2020-10-15 03:11:29,874 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-15 03:11:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:11:40,825 INFO L93 Difference]: Finished difference Result 90592 states and 153034 transitions. [2020-10-15 03:11:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:11:40,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-10-15 03:11:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:11:40,943 INFO L225 Difference]: With dead ends: 90592 [2020-10-15 03:11:40,944 INFO L226 Difference]: Without dead ends: 69022 [2020-10-15 03:11:40,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:11:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69022 states. [2020-10-15 03:11:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69022 to 57910. [2020-10-15 03:11:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57910 states. [2020-10-15 03:11:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57910 states to 57910 states and 97746 transitions. [2020-10-15 03:11:44,727 INFO L78 Accepts]: Start accepts. Automaton has 57910 states and 97746 transitions. Word has length 216 [2020-10-15 03:11:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:44,727 INFO L479 AbstractCegarLoop]: Abstraction has 57910 states and 97746 transitions. [2020-10-15 03:11:44,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:11:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 57910 states and 97746 transitions. [2020-10-15 03:11:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-15 03:11:44,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:44,789 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] [2020-10-15 03:11:44,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:11:44,790 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1493869529, now seen corresponding path program 1 times [2020-10-15 03:11:44,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:44,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906008235] [2020-10-15 03:11:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:49,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:49,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-15 03:11:49,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:11:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-15 03:11:49,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:49,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:11:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:11:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-15 03:11:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:51,187 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:11:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:51,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:51,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:51,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:11:51,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:51,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:11:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:11:51,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:51,337 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 03:11:51,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906008235] [2020-10-15 03:11:51,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:51,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:11:51,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166445867] [2020-10-15 03:11:51,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:11:51,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:51,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:11:51,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:11:51,340 INFO L87 Difference]: Start difference. First operand 57910 states and 97746 transitions. Second operand 8 states. [2020-10-15 03:11:52,265 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-15 03:12:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:03,604 INFO L93 Difference]: Finished difference Result 75210 states and 126172 transitions. [2020-10-15 03:12:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:12:03,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-10-15 03:12:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:03,721 INFO L225 Difference]: With dead ends: 75210 [2020-10-15 03:12:03,721 INFO L226 Difference]: Without dead ends: 69592 [2020-10-15 03:12:03,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:12:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69592 states. [2020-10-15 03:12:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69592 to 58102. [2020-10-15 03:12:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58102 states. [2020-10-15 03:12:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58102 states to 58102 states and 98034 transitions. [2020-10-15 03:12:09,071 INFO L78 Accepts]: Start accepts. Automaton has 58102 states and 98034 transitions. Word has length 216 [2020-10-15 03:12:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:09,072 INFO L479 AbstractCegarLoop]: Abstraction has 58102 states and 98034 transitions. [2020-10-15 03:12:09,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:12:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 58102 states and 98034 transitions. [2020-10-15 03:12:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-15 03:12:09,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:09,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:12:09,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:12:09,121 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:09,122 INFO L82 PathProgramCache]: Analyzing trace with hash -896259238, now seen corresponding path program 1 times [2020-10-15 03:12:09,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:09,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374458169] [2020-10-15 03:12:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:11,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:14,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:14,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-15 03:12:14,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:12:14,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-15 03:12:14,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:14,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:12:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:12:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-15 03:12:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:12:15,440 WARN L193 SmtUtils]: Spent 934.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:12:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:15,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:15,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:15,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:15,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:15,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 03:12:15,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:15,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:12:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:12:15,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:12:15,570 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 03:12:15,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374458169] [2020-10-15 03:12:15,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:15,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:12:15,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856170763] [2020-10-15 03:12:15,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:12:15,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:15,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:12:15,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:12:15,572 INFO L87 Difference]: Start difference. First operand 58102 states and 98034 transitions. Second operand 8 states. [2020-10-15 03:12:16,580 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-15 03:12:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:29,190 INFO L93 Difference]: Finished difference Result 75798 states and 127116 transitions. [2020-10-15 03:12:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:12:29,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-10-15 03:12:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:29,287 INFO L225 Difference]: With dead ends: 75798 [2020-10-15 03:12:29,287 INFO L226 Difference]: Without dead ends: 70180 [2020-10-15 03:12:29,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:12:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70180 states. [2020-10-15 03:12:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70180 to 58198. [2020-10-15 03:12:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58198 states. [2020-10-15 03:12:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58198 states to 58198 states and 98162 transitions. [2020-10-15 03:12:33,266 INFO L78 Accepts]: Start accepts. Automaton has 58198 states and 98162 transitions. Word has length 216 [2020-10-15 03:12:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:33,267 INFO L479 AbstractCegarLoop]: Abstraction has 58198 states and 98162 transitions. [2020-10-15 03:12:33,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:12:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 58198 states and 98162 transitions. [2020-10-15 03:12:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-15 03:12:33,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:33,308 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] [2020-10-15 03:12:33,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:12:33,308 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:33,309 INFO L82 PathProgramCache]: Analyzing trace with hash -564662064, now seen corresponding path program 1 times [2020-10-15 03:12:33,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:33,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251976923] [2020-10-15 03:12:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:38,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:38,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-15 03:12:38,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:12:38,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:12:38,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:38,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:12:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-15 03:12:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:12:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:12:39,308 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:12:39,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:39,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:12:39,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:39,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:12:39,384 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 03:12:39,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251976923] [2020-10-15 03:12:39,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:39,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:12:39,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753523439] [2020-10-15 03:12:39,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:12:39,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:39,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:12:39,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:39,386 INFO L87 Difference]: Start difference. First operand 58198 states and 98162 transitions. Second operand 4 states. [2020-10-15 03:12:40,241 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-15 03:12:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:51,595 INFO L93 Difference]: Finished difference Result 100954 states and 169268 transitions. [2020-10-15 03:12:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:12:51,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 216 [2020-10-15 03:12:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:51,712 INFO L225 Difference]: With dead ends: 100954 [2020-10-15 03:12:51,713 INFO L226 Difference]: Without dead ends: 78872 [2020-10-15 03:12:51,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:12:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78872 states. [2020-10-15 03:12:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78872 to 78870. [2020-10-15 03:12:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78870 states. [2020-10-15 03:12:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78870 states to 78870 states and 132242 transitions. [2020-10-15 03:12:57,414 INFO L78 Accepts]: Start accepts. Automaton has 78870 states and 132242 transitions. Word has length 216 [2020-10-15 03:12:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:57,416 INFO L479 AbstractCegarLoop]: Abstraction has 78870 states and 132242 transitions. [2020-10-15 03:12:57,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:12:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 78870 states and 132242 transitions. [2020-10-15 03:12:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-15 03:12:57,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:57,470 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] [2020-10-15 03:12:57,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:12:57,471 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:57,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1397627581, now seen corresponding path program 1 times [2020-10-15 03:12:57,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:57,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453611183] [2020-10-15 03:12:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:58,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:01,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:02,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:02,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:02,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-15 03:13:02,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:13:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 03:13:02,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:02,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:13:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 03:13:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-15 03:13:02,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:03,484 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-15 03:13:03,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:03,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:03,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:03,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:13:03,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:03,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:03,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:03,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:03,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:03,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:03,596 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 03:13:03,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453611183] [2020-10-15 03:13:03,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:03,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:13:03,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958819763] [2020-10-15 03:13:03,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:13:03,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:03,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:13:03,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:13:03,602 INFO L87 Difference]: Start difference. First operand 78870 states and 132242 transitions. Second operand 4 states. [2020-10-15 03:13:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:24,690 INFO L93 Difference]: Finished difference Result 231019 states and 387241 transitions. [2020-10-15 03:13:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:13:24,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 220 [2020-10-15 03:13:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:24,956 INFO L225 Difference]: With dead ends: 231019 [2020-10-15 03:13:24,957 INFO L226 Difference]: Without dead ends: 155577 [2020-10-15 03:13:25,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:13:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155577 states.