/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_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:58:09,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:58:09,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:58:09,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:58:09,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:58:09,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:58:09,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:58:09,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:58:09,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:58:09,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:58:09,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:58:09,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:58:09,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:58:09,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:58:09,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:58:09,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:58:09,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:58:09,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:58:09,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:58:09,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:58:09,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:58:09,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:58:09,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:58:09,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:58:09,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:58:09,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:58:09,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:58:09,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:58:09,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:58:09,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:58:09,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:58:09,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:58:09,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:58:09,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:58:09,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:58:09,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:58:09,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:58:09,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:58:09,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:58:09,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:58:09,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:58:09,187 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 03:58:09,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:58:09,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:58:09,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:58:09,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:58:09,212 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:58:09,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:58:09,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:58:09,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:58:09,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:58:09,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:58:09,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:58:09,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:58:09,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:58:09,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:58:09,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:58:09,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:58:09,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:58:09,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:58:09,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:58:09,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:58:09,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:58:09,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:58:09,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:58:09,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:58:09,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:58:09,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:58:09,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:58:09,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:58:09,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:58:09,217 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 03:58:09,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:58:09,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:58:09,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:58:09,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:58:09,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:58:09,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:58:09,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee96759ab/a85d2b33e0c342faa336831f2a55c9d3/FLAG1fa3a2e76 [2020-10-15 03:58:10,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:58:10,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:58:10,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee96759ab/a85d2b33e0c342faa336831f2a55c9d3/FLAG1fa3a2e76 [2020-10-15 03:58:10,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee96759ab/a85d2b33e0c342faa336831f2a55c9d3 [2020-10-15 03:58:10,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:58:10,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:58:10,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:58:10,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:58:10,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:58:10,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:58:10" (1/1) ... [2020-10-15 03:58:10,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0d3285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:10, skipping insertion in model container [2020-10-15 03:58:10,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:58:10" (1/1) ... [2020-10-15 03:58:10,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:58:10,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:58:11,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:58:11,163 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:58:11,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:58:11,323 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:58:11,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11 WrapperNode [2020-10-15 03:58:11,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:58:11,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:58:11,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:58:11,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:58:11,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (1/1) ... [2020-10-15 03:58:11,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (1/1) ... [2020-10-15 03:58:11,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (1/1) ... [2020-10-15 03:58:11,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (1/1) ... [2020-10-15 03:58:11,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (1/1) ... [2020-10-15 03:58:11,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (1/1) ... [2020-10-15 03:58:11,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (1/1) ... [2020-10-15 03:58:11,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:58:11,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:58:11,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:58:11,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:58:11,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (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 03:58:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:58:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:58:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:58:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:58:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:58:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:58:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:58:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:58:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:58:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:58:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:58:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:58:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:58:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:58:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:58:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:58:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:58:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:58:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:58:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:58:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:58:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:58:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:58:12,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:58:12,742 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:58:12,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:58:12 BoogieIcfgContainer [2020-10-15 03:58:12,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:58:12,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:58:12,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:58:12,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:58:12,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:58:10" (1/3) ... [2020-10-15 03:58:12,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f837bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:58:12, skipping insertion in model container [2020-10-15 03:58:12,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:58:11" (2/3) ... [2020-10-15 03:58:12,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f837bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:58:12, skipping insertion in model container [2020-10-15 03:58:12,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:58:12" (3/3) ... [2020-10-15 03:58:12,757 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:58:12,767 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:58:12,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:58:12,789 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:58:12,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:58:12,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:58:12,817 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:58:12,817 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:58:12,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:58:12,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:58:12,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:58:12,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:58:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2020-10-15 03:58:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:58:12,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:12,854 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] [2020-10-15 03:58:12,855 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:12,861 INFO L82 PathProgramCache]: Analyzing trace with hash 534685997, now seen corresponding path program 1 times [2020-10-15 03:58:12,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:12,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894466285] [2020-10-15 03:58:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:14,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:18,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:18,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:58:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:58:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:58:18,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:18,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:58:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:58:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:58:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:58:18,828 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:18,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:18,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:18,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:18,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:58:18,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:18,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:58:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:58:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:18,937 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 03:58:18,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894466285] [2020-10-15 03:58:18,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:18,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:58:18,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182416032] [2020-10-15 03:58:18,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:58:18,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:18,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:58:18,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:18,967 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 9 states. [2020-10-15 03:58:19,430 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:58:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:21,156 INFO L93 Difference]: Finished difference Result 1132 states and 1829 transitions. [2020-10-15 03:58:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:58:21,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-15 03:58:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:21,181 INFO L225 Difference]: With dead ends: 1132 [2020-10-15 03:58:21,182 INFO L226 Difference]: Without dead ends: 988 [2020-10-15 03:58:21,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:58:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-10-15 03:58:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 386. [2020-10-15 03:58:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-15 03:58:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 575 transitions. [2020-10-15 03:58:21,283 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 575 transitions. Word has length 100 [2020-10-15 03:58:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:21,284 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 575 transitions. [2020-10-15 03:58:21,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:58:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 575 transitions. [2020-10-15 03:58:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:58:21,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:21,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:58:21,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:58:21,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:21,290 INFO L82 PathProgramCache]: Analyzing trace with hash -927897771, now seen corresponding path program 1 times [2020-10-15 03:58:21,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:21,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906044369] [2020-10-15 03:58:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:21,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:21,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:22,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:22,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:58:22,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-10-15 03:58:22,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:22,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:58:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:58:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:58:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:23,255 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:23,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:23,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:23,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:23,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:23,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:58:23,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:23,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:58:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:58:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:23,409 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 03:58:23,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906044369] [2020-10-15 03:58:23,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:23,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:58:23,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208610837] [2020-10-15 03:58:23,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:58:23,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:23,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:58:23,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:23,414 INFO L87 Difference]: Start difference. First operand 386 states and 575 transitions. Second operand 9 states. [2020-10-15 03:58:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:26,760 INFO L93 Difference]: Finished difference Result 1913 states and 2959 transitions. [2020-10-15 03:58:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:58:26,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-15 03:58:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:26,773 INFO L225 Difference]: With dead ends: 1913 [2020-10-15 03:58:26,773 INFO L226 Difference]: Without dead ends: 1627 [2020-10-15 03:58:26,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-10-15 03:58:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1617. [2020-10-15 03:58:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-10-15 03:58:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2494 transitions. [2020-10-15 03:58:26,924 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2494 transitions. Word has length 101 [2020-10-15 03:58:26,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:26,924 INFO L479 AbstractCegarLoop]: Abstraction has 1617 states and 2494 transitions. [2020-10-15 03:58:26,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:58:26,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2494 transitions. [2020-10-15 03:58:26,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:26,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:26,935 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] [2020-10-15 03:58:26,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:58:26,935 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:26,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1284327097, now seen corresponding path program 1 times [2020-10-15 03:58:26,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:26,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894616079] [2020-10-15 03:58:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:27,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:27,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:27,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:27,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-15 03:58:27,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:27,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:58:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:28,097 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:28,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:28,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:28,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:58:28,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:28,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:28,162 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 03:58:28,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894616079] [2020-10-15 03:58:28,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:28,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:28,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326061098] [2020-10-15 03:58:28,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:28,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:28,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:28,167 INFO L87 Difference]: Start difference. First operand 1617 states and 2494 transitions. Second operand 6 states. [2020-10-15 03:58:28,426 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-15 03:58:29,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:29,883 INFO L93 Difference]: Finished difference Result 4430 states and 6900 transitions. [2020-10-15 03:58:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:29,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:29,898 INFO L225 Difference]: With dead ends: 4430 [2020-10-15 03:58:29,899 INFO L226 Difference]: Without dead ends: 2881 [2020-10-15 03:58:29,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:29,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-10-15 03:58:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2879. [2020-10-15 03:58:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-15 03:58:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 4459 transitions. [2020-10-15 03:58:30,120 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 4459 transitions. Word has length 102 [2020-10-15 03:58:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:30,122 INFO L479 AbstractCegarLoop]: Abstraction has 2879 states and 4459 transitions. [2020-10-15 03:58:30,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:30,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 4459 transitions. [2020-10-15 03:58:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:30,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:30,132 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] [2020-10-15 03:58:30,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:58:30,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash -15196664, now seen corresponding path program 1 times [2020-10-15 03:58:30,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:30,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702491955] [2020-10-15 03:58:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:30,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:31,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:31,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-15 03:58:31,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:31,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:58:31,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:31,481 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:31,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:31,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:31,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:31,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:31,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:58:31,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:31,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:31,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:31,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:31,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:31,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:31,557 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 03:58:31,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702491955] [2020-10-15 03:58:31,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:31,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:31,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97222759] [2020-10-15 03:58:31,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:31,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:31,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:31,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:31,561 INFO L87 Difference]: Start difference. First operand 2879 states and 4459 transitions. Second operand 6 states. [2020-10-15 03:58:31,800 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:58:33,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:33,315 INFO L93 Difference]: Finished difference Result 8049 states and 12548 transitions. [2020-10-15 03:58:33,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:33,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:33,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:33,340 INFO L225 Difference]: With dead ends: 8049 [2020-10-15 03:58:33,340 INFO L226 Difference]: Without dead ends: 5261 [2020-10-15 03:58:33,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2020-10-15 03:58:33,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5259. [2020-10-15 03:58:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5259 states. [2020-10-15 03:58:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 8155 transitions. [2020-10-15 03:58:33,711 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 8155 transitions. Word has length 102 [2020-10-15 03:58:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:33,713 INFO L479 AbstractCegarLoop]: Abstraction has 5259 states and 8155 transitions. [2020-10-15 03:58:33,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 8155 transitions. [2020-10-15 03:58:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:33,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:33,720 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] [2020-10-15 03:58:33,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:58:33,720 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:33,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:33,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2132752041, now seen corresponding path program 1 times [2020-10-15 03:58:33,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:33,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93682654] [2020-10-15 03:58:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:34,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:34,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:34,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:34,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-15 03:58:34,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:34,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:58:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:34,734 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:34,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:34,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:34,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:34,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:34,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 03:58:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:34,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:58:34,875 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 03:58:34,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93682654] [2020-10-15 03:58:34,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:34,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:34,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030708391] [2020-10-15 03:58:34,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:34,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:34,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:34,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:34,877 INFO L87 Difference]: Start difference. First operand 5259 states and 8155 transitions. Second operand 6 states. [2020-10-15 03:58:35,089 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-15 03:58:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:36,641 INFO L93 Difference]: Finished difference Result 14907 states and 23165 transitions. [2020-10-15 03:58:36,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:36,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:36,697 INFO L225 Difference]: With dead ends: 14907 [2020-10-15 03:58:36,698 INFO L226 Difference]: Without dead ends: 9769 [2020-10-15 03:58:36,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2020-10-15 03:58:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2020-10-15 03:58:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9767 states. [2020-10-15 03:58:37,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 15086 transitions. [2020-10-15 03:58:37,330 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 15086 transitions. Word has length 102 [2020-10-15 03:58:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:37,331 INFO L479 AbstractCegarLoop]: Abstraction has 9767 states and 15086 transitions. [2020-10-15 03:58:37,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 15086 transitions. [2020-10-15 03:58:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:37,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:37,340 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] [2020-10-15 03:58:37,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:58:37,340 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:37,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1644993525, now seen corresponding path program 1 times [2020-10-15 03:58:37,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:37,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241687011] [2020-10-15 03:58:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:38,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-15 03:58:38,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:38,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:58:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 83 [2020-10-15 03:58:38,458 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:38,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:38,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:38,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:38,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:38,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 03:58:38,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:38,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:38,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:38,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:38,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:38,557 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 03:58:38,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241687011] [2020-10-15 03:58:38,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:38,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:38,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168039572] [2020-10-15 03:58:38,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:38,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:38,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:38,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:38,562 INFO L87 Difference]: Start difference. First operand 9767 states and 15086 transitions. Second operand 6 states. [2020-10-15 03:58:38,911 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:58:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:41,534 INFO L93 Difference]: Finished difference Result 27817 states and 43050 transitions. [2020-10-15 03:58:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:41,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:41,607 INFO L225 Difference]: With dead ends: 27817 [2020-10-15 03:58:41,607 INFO L226 Difference]: Without dead ends: 18249 [2020-10-15 03:58:41,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:58:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18249 states. [2020-10-15 03:58:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18249 to 18247. [2020-10-15 03:58:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18247 states. [2020-10-15 03:58:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18247 states to 18247 states and 28112 transitions. [2020-10-15 03:58:42,793 INFO L78 Accepts]: Start accepts. Automaton has 18247 states and 28112 transitions. Word has length 102 [2020-10-15 03:58:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:42,793 INFO L479 AbstractCegarLoop]: Abstraction has 18247 states and 28112 transitions. [2020-10-15 03:58:42,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 18247 states and 28112 transitions. [2020-10-15 03:58:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:42,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:42,802 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] [2020-10-15 03:58:42,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:58:42,802 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:42,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1542485850, now seen corresponding path program 1 times [2020-10-15 03:58:42,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:42,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727475604] [2020-10-15 03:58:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:42,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:43,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:43,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:43,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-15 03:58:43,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:43,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:58:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:43,918 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:43,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:43,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:43,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:43,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:43,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:58:43,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:43,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:43,998 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 03:58:43,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727475604] [2020-10-15 03:58:43,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:43,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:43,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97705498] [2020-10-15 03:58:44,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:44,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:44,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:44,001 INFO L87 Difference]: Start difference. First operand 18247 states and 28112 transitions. Second operand 6 states. [2020-10-15 03:58:44,240 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:58:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:47,613 INFO L93 Difference]: Finished difference Result 53258 states and 82023 transitions. [2020-10-15 03:58:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:47,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:47,706 INFO L225 Difference]: With dead ends: 53258 [2020-10-15 03:58:47,707 INFO L226 Difference]: Without dead ends: 35169 [2020-10-15 03:58:47,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:58:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35169 states. [2020-10-15 03:58:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35169 to 35167. [2020-10-15 03:58:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35167 states. [2020-10-15 03:58:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35167 states to 35167 states and 53874 transitions. [2020-10-15 03:58:49,534 INFO L78 Accepts]: Start accepts. Automaton has 35167 states and 53874 transitions. Word has length 102 [2020-10-15 03:58:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:49,534 INFO L479 AbstractCegarLoop]: Abstraction has 35167 states and 53874 transitions. [2020-10-15 03:58:49,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 35167 states and 53874 transitions. [2020-10-15 03:58:49,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:58:49,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:49,546 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] [2020-10-15 03:58:49,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:58:49,547 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1369317135, now seen corresponding path program 1 times [2020-10-15 03:58:49,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:49,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910560679] [2020-10-15 03:58:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:50,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:50,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:58:50,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:50,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-15 03:58:50,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:50,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:58:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:50,554 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:50,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:50,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:50,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:50,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:58:50,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:50,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:50,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:50,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:50,619 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 03:58:50,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910560679] [2020-10-15 03:58:50,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:50,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:50,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272537253] [2020-10-15 03:58:50,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:50,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:50,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:50,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:50,625 INFO L87 Difference]: Start difference. First operand 35167 states and 53874 transitions. Second operand 6 states. [2020-10-15 03:58:50,852 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:58:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:55,208 INFO L93 Difference]: Finished difference Result 104564 states and 160125 transitions. [2020-10-15 03:58:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:55,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-15 03:58:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:55,452 INFO L225 Difference]: With dead ends: 104564 [2020-10-15 03:58:55,453 INFO L226 Difference]: Without dead ends: 69481 [2020-10-15 03:58:55,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:58:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69481 states. [2020-10-15 03:59:00,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69481 to 69479. [2020-10-15 03:59:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69479 states. [2020-10-15 03:59:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69479 states to 69479 states and 105959 transitions. [2020-10-15 03:59:00,603 INFO L78 Accepts]: Start accepts. Automaton has 69479 states and 105959 transitions. Word has length 103 [2020-10-15 03:59:00,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:00,603 INFO L479 AbstractCegarLoop]: Abstraction has 69479 states and 105959 transitions. [2020-10-15 03:59:00,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:59:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 69479 states and 105959 transitions. [2020-10-15 03:59:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:00,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:00,620 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] [2020-10-15 03:59:00,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:59:00,620 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash -561548342, now seen corresponding path program 1 times [2020-10-15 03:59:00,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:00,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787774258] [2020-10-15 03:59:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:00,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:03,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:03,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:03,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:59:03,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2753 [2020-10-15 03:59:03,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:03,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:03,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:59:03,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:59:03,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:59:03,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:03,816 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:03,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:03,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:03,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:59:03,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:03,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:03,869 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 03:59:03,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787774258] [2020-10-15 03:59:03,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:03,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:59:03,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741692827] [2020-10-15 03:59:03,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:59:03,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:03,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:59:03,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:03,871 INFO L87 Difference]: Start difference. First operand 69479 states and 105959 transitions. Second operand 9 states. [2020-10-15 03:59:05,083 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:59:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:28,897 INFO L93 Difference]: Finished difference Result 420951 states and 640629 transitions. [2020-10-15 03:59:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:59:28,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 03:59:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:29,562 INFO L225 Difference]: With dead ends: 420951 [2020-10-15 03:59:29,562 INFO L226 Difference]: Without dead ends: 362795 [2020-10-15 03:59:29,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:59:29,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362795 states. [2020-10-15 03:59:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362795 to 69760. [2020-10-15 03:59:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69760 states. [2020-10-15 03:59:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69760 states to 69760 states and 106324 transitions. [2020-10-15 03:59:40,479 INFO L78 Accepts]: Start accepts. Automaton has 69760 states and 106324 transitions. Word has length 103 [2020-10-15 03:59:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:40,479 INFO L479 AbstractCegarLoop]: Abstraction has 69760 states and 106324 transitions. [2020-10-15 03:59:40,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:59:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 69760 states and 106324 transitions. [2020-10-15 03:59:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:40,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:40,494 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] [2020-10-15 03:59:40,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:59:40,494 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:40,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:40,495 INFO L82 PathProgramCache]: Analyzing trace with hash -915234774, now seen corresponding path program 1 times [2020-10-15 03:59:40,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:40,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911098974] [2020-10-15 03:59:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:43,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:43,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:43,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:59:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3078 [2020-10-15 03:59:43,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:43,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:59:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:59:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:59:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:43,834 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 25 [2020-10-15 03:59:44,069 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:44,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:44,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:44,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:59:44,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:44,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:44,128 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 03:59:44,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911098974] [2020-10-15 03:59:44,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:44,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:59:44,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606993434] [2020-10-15 03:59:44,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:59:44,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:44,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:59:44,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:44,130 INFO L87 Difference]: Start difference. First operand 69760 states and 106324 transitions. Second operand 9 states. [2020-10-15 03:59:44,406 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 04:00:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:00:20,646 INFO L93 Difference]: Finished difference Result 387540 states and 587332 transitions. [2020-10-15 04:00:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 04:00:20,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 04:00:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:00:21,140 INFO L225 Difference]: With dead ends: 387540 [2020-10-15 04:00:21,141 INFO L226 Difference]: Without dead ends: 345110 [2020-10-15 04:00:21,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 04:00:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345110 states. [2020-10-15 04:00:30,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345110 to 70365. [2020-10-15 04:00:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70365 states. [2020-10-15 04:00:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70365 states to 70365 states and 107139 transitions. [2020-10-15 04:00:30,836 INFO L78 Accepts]: Start accepts. Automaton has 70365 states and 107139 transitions. Word has length 103 [2020-10-15 04:00:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:00:30,836 INFO L479 AbstractCegarLoop]: Abstraction has 70365 states and 107139 transitions. [2020-10-15 04:00:30,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:00:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 70365 states and 107139 transitions. [2020-10-15 04:00:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:00:30,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:00:30,849 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] [2020-10-15 04:00:30,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:00:30,849 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:00:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:00:30,850 INFO L82 PathProgramCache]: Analyzing trace with hash -6452086, now seen corresponding path program 1 times [2020-10-15 04:00:30,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:00:30,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543720607] [2020-10-15 04:00:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:00:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:32,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:32,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 04:00:32,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:00:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1252 [2020-10-15 04:00:32,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:32,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:00:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:00:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 04:00:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:00:32,386 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 30 [2020-10-15 04:00:32,924 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:00:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:00:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:32,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:32,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:00:32,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:00:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:00:32,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:32,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:00:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:00:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:00:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:00:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:00:32,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543720607] [2020-10-15 04:00:32,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:00:32,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:00:32,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229901244] [2020-10-15 04:00:32,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:00:32,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:00:32,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:00:32,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:00:32,983 INFO L87 Difference]: Start difference. First operand 70365 states and 107139 transitions. Second operand 9 states. [2020-10-15 04:00:33,259 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 04:01:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:17,069 INFO L93 Difference]: Finished difference Result 368542 states and 560742 transitions. [2020-10-15 04:01:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 04:01:17,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 04:01:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:17,588 INFO L225 Difference]: With dead ends: 368542 [2020-10-15 04:01:17,589 INFO L226 Difference]: Without dead ends: 331775 [2020-10-15 04:01:17,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 04:01:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331775 states. [2020-10-15 04:01:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331775 to 71509. [2020-10-15 04:01:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71509 states. [2020-10-15 04:01:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71509 states to 71509 states and 108691 transitions. [2020-10-15 04:01:28,402 INFO L78 Accepts]: Start accepts. Automaton has 71509 states and 108691 transitions. Word has length 103 [2020-10-15 04:01:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:28,402 INFO L479 AbstractCegarLoop]: Abstraction has 71509 states and 108691 transitions. [2020-10-15 04:01:28,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:01:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 71509 states and 108691 transitions. [2020-10-15 04:01:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:01:28,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:28,416 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] [2020-10-15 04:01:28,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:01:28,416 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:28,417 INFO L82 PathProgramCache]: Analyzing trace with hash -330128054, now seen corresponding path program 1 times [2020-10-15 04:01:28,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:28,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218641769] [2020-10-15 04:01:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:30,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 04:01:30,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:01:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2250 [2020-10-15 04:01:30,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:30,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:01:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:01:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 04:01:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:01:31,071 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:01:31,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:31,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:31,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:31,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:01:31,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:31,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:01:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:01:31,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218641769] [2020-10-15 04:01:31,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:31,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:01:31,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310002834] [2020-10-15 04:01:31,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:01:31,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:31,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:01:31,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:01:31,115 INFO L87 Difference]: Start difference. First operand 71509 states and 108691 transitions. Second operand 9 states. [2020-10-15 04:01:31,391 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187