/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:07:03,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:07:03,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:07:03,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:07:03,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:07:03,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:07:03,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:07:03,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:07:03,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:07:03,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:07:03,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:07:03,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:07:03,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:07:03,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:07:03,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:07:03,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:07:03,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:07:03,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:07:03,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:07:03,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:07:03,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:07:03,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:07:03,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:07:03,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:07:03,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:07:03,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:07:03,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:07:03,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:07:03,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:07:03,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:07:03,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:07:03,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:07:03,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:07:03,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:07:03,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:07:03,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:07:03,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:07:03,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:07:03,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:07:03,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:07:03,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:07:03,252 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 [2020-10-13 15:07:03,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:07:03,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:07:03,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:07:03,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:07:03,295 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:07:03,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:07:03,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:07:03,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:07:03,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:07:03,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:07:03,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:07:03,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:07:03,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:07:03,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:07:03,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:07:03,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:07:03,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:07:03,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:07:03,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:07:03,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:07:03,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:07:03,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:07:03,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:07:03,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:07:03,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:07:03,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:07:03,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:07:03,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:07:03,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:07:03,302 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:07:03,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:07:03,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:07:03,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:07:03,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:07:03,661 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:07:03,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:07:03,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/162e9f9fa/1a9b50eea2ac4ce2950ad0d641f55a6c/FLAGca1693a8f [2020-10-13 15:07:04,430 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:07:04,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:07:04,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/162e9f9fa/1a9b50eea2ac4ce2950ad0d641f55a6c/FLAGca1693a8f [2020-10-13 15:07:04,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/162e9f9fa/1a9b50eea2ac4ce2950ad0d641f55a6c [2020-10-13 15:07:04,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:07:04,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:07:04,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:07:04,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:07:04,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:07:04,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:07:04" (1/1) ... [2020-10-13 15:07:04,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3386436d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:04, skipping insertion in model container [2020-10-13 15:07:04,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:07:04" (1/1) ... [2020-10-13 15:07:04,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:07:04,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:07:06,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:07:06,171 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:07:07,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:07:07,160 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:07:07,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07 WrapperNode [2020-10-13 15:07:07,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:07:07,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:07:07,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:07:07,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:07:07,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (1/1) ... [2020-10-13 15:07:07,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (1/1) ... [2020-10-13 15:07:07,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (1/1) ... [2020-10-13 15:07:07,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (1/1) ... [2020-10-13 15:07:07,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (1/1) ... [2020-10-13 15:07:07,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (1/1) ... [2020-10-13 15:07:07,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (1/1) ... [2020-10-13 15:07:07,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:07:07,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:07:07,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:07:07,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:07:07,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (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 [2020-10-13 15:07:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:07:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:07:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:07:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:07:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:07:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:07:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 15:07:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:07:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:07:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:07:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:07:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:07:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:07:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:07:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:07:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:07:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:07:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:07:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:07:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:07:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:07:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:07:10,735 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:07:10,735 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:07:10,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:07:10 BoogieIcfgContainer [2020-10-13 15:07:10,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:07:10,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:07:10,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:07:10,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:07:10,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:07:04" (1/3) ... [2020-10-13 15:07:10,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44536948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:07:10, skipping insertion in model container [2020-10-13 15:07:10,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:07:07" (2/3) ... [2020-10-13 15:07:10,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44536948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:07:10, skipping insertion in model container [2020-10-13 15:07:10,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:07:10" (3/3) ... [2020-10-13 15:07:10,754 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:07:10,765 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:07:10,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-13 15:07:10,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-13 15:07:10,820 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:07:10,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:07:10,821 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:07:10,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:07:10,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:07:10,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:07:10,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:07:10,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:07:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states. [2020-10-13 15:07:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 15:07:10,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:10,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:10,906 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:10,914 INFO L82 PathProgramCache]: Analyzing trace with hash -69613383, now seen corresponding path program 1 times [2020-10-13 15:07:10,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:10,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030867279] [2020-10-13 15:07:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:16,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:16,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:16,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 15:07:16,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:07:16,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-13 15:07:16,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:16,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:07:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:07:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 15:07:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:07:17,927 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:07:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:17,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:17,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:17,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 15:07:17,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:07:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:18,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030867279] [2020-10-13 15:07:18,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:18,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:07:18,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962959419] [2020-10-13 15:07:18,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:07:18,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:18,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:07:18,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:07:18,297 INFO L87 Difference]: Start difference. First operand 997 states. Second operand 5 states. [2020-10-13 15:07:30,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:30,920 INFO L93 Difference]: Finished difference Result 2907 states and 5212 transitions. [2020-10-13 15:07:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:07:30,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-13 15:07:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:30,953 INFO L225 Difference]: With dead ends: 2907 [2020-10-13 15:07:30,953 INFO L226 Difference]: Without dead ends: 1953 [2020-10-13 15:07:30,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:07:30,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2020-10-13 15:07:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1852. [2020-10-13 15:07:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1852 states. [2020-10-13 15:07:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2826 transitions. [2020-10-13 15:07:31,154 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2826 transitions. Word has length 320 [2020-10-13 15:07:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:31,155 INFO L479 AbstractCegarLoop]: Abstraction has 1852 states and 2826 transitions. [2020-10-13 15:07:31,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:07:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2826 transitions. [2020-10-13 15:07:31,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 15:07:31,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:31,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:31,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:07:31,165 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1206009639, now seen corresponding path program 1 times [2020-10-13 15:07:31,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:31,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756874730] [2020-10-13 15:07:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:36,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:36,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 15:07:36,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:07:36,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 15:07:36,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:07:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:07:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 15:07:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:37,038 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:07:37,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:37,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:37,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:37,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:37,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 15:07:37,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:37,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:37,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:07:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:37,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756874730] [2020-10-13 15:07:37,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:37,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:07:37,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923996300] [2020-10-13 15:07:37,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:07:37,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:37,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:07:37,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:07:37,404 INFO L87 Difference]: Start difference. First operand 1852 states and 2826 transitions. Second operand 5 states. [2020-10-13 15:07:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:48,321 INFO L93 Difference]: Finished difference Result 5477 states and 8347 transitions. [2020-10-13 15:07:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:07:48,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-13 15:07:48,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:48,345 INFO L225 Difference]: With dead ends: 5477 [2020-10-13 15:07:48,345 INFO L226 Difference]: Without dead ends: 3641 [2020-10-13 15:07:48,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:07:48,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2020-10-13 15:07:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3544. [2020-10-13 15:07:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2020-10-13 15:07:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5397 transitions. [2020-10-13 15:07:48,535 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5397 transitions. Word has length 322 [2020-10-13 15:07:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:48,538 INFO L479 AbstractCegarLoop]: Abstraction has 3544 states and 5397 transitions. [2020-10-13 15:07:48,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:07:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5397 transitions. [2020-10-13 15:07:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 15:07:48,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:48,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:48,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:07:48,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:48,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1509921216, now seen corresponding path program 1 times [2020-10-13 15:07:48,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:48,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648863698] [2020-10-13 15:07:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:50,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:53,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:53,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 15:07:53,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:07:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 15:07:53,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:07:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:07:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:07:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:07:54,309 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:07:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:54,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:54,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:54,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 15:07:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:54,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648863698] [2020-10-13 15:07:54,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:54,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:07:54,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395007232] [2020-10-13 15:07:54,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:07:54,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:54,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:07:54,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:54,468 INFO L87 Difference]: Start difference. First operand 3544 states and 5397 transitions. Second operand 4 states. [2020-10-13 15:08:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:08:04,889 INFO L93 Difference]: Finished difference Result 10567 states and 16085 transitions. [2020-10-13 15:08:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:08:04,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-10-13 15:08:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:08:04,927 INFO L225 Difference]: With dead ends: 10567 [2020-10-13 15:08:04,927 INFO L226 Difference]: Without dead ends: 7056 [2020-10-13 15:08:04,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:08:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2020-10-13 15:08:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 3558. [2020-10-13 15:08:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 15:08:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5414 transitions. [2020-10-13 15:08:05,179 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5414 transitions. Word has length 324 [2020-10-13 15:08:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:08:05,179 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 5414 transitions. [2020-10-13 15:08:05,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:08:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5414 transitions. [2020-10-13 15:08:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 15:08:05,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:08:05,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:08:05,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:08:05,190 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:08:05,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:08:05,190 INFO L82 PathProgramCache]: Analyzing trace with hash -852078217, now seen corresponding path program 1 times [2020-10-13 15:08:05,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:08:05,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348594384] [2020-10-13 15:08:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:08:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:06,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:10,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:10,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 15:08:10,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:08:10,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 15:08:10,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:08:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:08:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:08:10,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:11,093 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:08:11,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:08:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:11,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:11,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:08:11,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:08:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:08:11,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:08:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:08:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:08:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:08:11,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348594384] [2020-10-13 15:08:11,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:08:11,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:08:11,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996421273] [2020-10-13 15:08:11,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:08:11,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:08:11,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:08:11,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:08:11,258 INFO L87 Difference]: Start difference. First operand 3558 states and 5414 transitions. Second operand 5 states. [2020-10-13 15:08:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:08:22,330 INFO L93 Difference]: Finished difference Result 10331 states and 15654 transitions. [2020-10-13 15:08:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:08:22,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 15:08:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:08:22,362 INFO L225 Difference]: With dead ends: 10331 [2020-10-13 15:08:22,362 INFO L226 Difference]: Without dead ends: 7061 [2020-10-13 15:08:22,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:08:22,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2020-10-13 15:08:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 3851. [2020-10-13 15:08:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3851 states. [2020-10-13 15:08:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5928 transitions. [2020-10-13 15:08:22,648 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5928 transitions. Word has length 326 [2020-10-13 15:08:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:08:22,649 INFO L479 AbstractCegarLoop]: Abstraction has 3851 states and 5928 transitions. [2020-10-13 15:08:22,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:08:22,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5928 transitions. [2020-10-13 15:08:22,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 15:08:22,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:08:22,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:08:22,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:08:22,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:08:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:08:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2090796838, now seen corresponding path program 1 times [2020-10-13 15:08:22,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:08:22,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113855745] [2020-10-13 15:08:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:08:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:23,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:23,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:23,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:24,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:27,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 15:08:27,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:08:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 15:08:27,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:08:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:08:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 15:08:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:28,515 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:08:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:08:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:28,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:08:28,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:08:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:08:28,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:08:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:08:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:08:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:08:28,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113855745] [2020-10-13 15:08:28,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:08:28,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:08:28,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267877220] [2020-10-13 15:08:28,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:08:28,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:08:28,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:08:28,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:08:28,711 INFO L87 Difference]: Start difference. First operand 3851 states and 5928 transitions. Second operand 5 states. [2020-10-13 15:08:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:08:39,263 INFO L93 Difference]: Finished difference Result 11143 states and 17080 transitions. [2020-10-13 15:08:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:08:39,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 15:08:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:08:39,300 INFO L225 Difference]: With dead ends: 11143 [2020-10-13 15:08:39,300 INFO L226 Difference]: Without dead ends: 7493 [2020-10-13 15:08:39,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:08:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2020-10-13 15:08:39,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7419. [2020-10-13 15:08:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7419 states. [2020-10-13 15:08:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7419 states to 7419 states and 11345 transitions. [2020-10-13 15:08:39,789 INFO L78 Accepts]: Start accepts. Automaton has 7419 states and 11345 transitions. Word has length 326 [2020-10-13 15:08:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:08:39,838 INFO L479 AbstractCegarLoop]: Abstraction has 7419 states and 11345 transitions. [2020-10-13 15:08:39,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:08:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 7419 states and 11345 transitions. [2020-10-13 15:08:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-13 15:08:39,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:08:39,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:08:39,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:08:39,856 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:08:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:08:39,856 INFO L82 PathProgramCache]: Analyzing trace with hash -421682216, now seen corresponding path program 1 times [2020-10-13 15:08:39,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:08:39,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734728439] [2020-10-13 15:08:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:08:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:41,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:42,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:44,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:44,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-13 15:08:44,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:08:44,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 15:08:44,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:08:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:08:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:08:44,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:45,625 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:08:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:08:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:45,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:45,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:08:45,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:08:45,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:08:45,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:08:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:08:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:08:45,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:08:45,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734728439] [2020-10-13 15:08:45,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:08:45,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:08:45,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624734669] [2020-10-13 15:08:45,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:08:45,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:08:45,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:08:45,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:08:45,734 INFO L87 Difference]: Start difference. First operand 7419 states and 11345 transitions. Second operand 5 states. [2020-10-13 15:08:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:08:57,930 INFO L93 Difference]: Finished difference Result 20344 states and 30874 transitions. [2020-10-13 15:08:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:08:57,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-13 15:08:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:08:57,962 INFO L225 Difference]: With dead ends: 20344 [2020-10-13 15:08:57,962 INFO L226 Difference]: Without dead ends: 13903 [2020-10-13 15:08:57,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:08:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13903 states. [2020-10-13 15:08:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13903 to 8334. [2020-10-13 15:08:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8334 states. [2020-10-13 15:08:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 12900 transitions. [2020-10-13 15:08:58,563 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 12900 transitions. Word has length 328 [2020-10-13 15:08:58,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:08:58,563 INFO L479 AbstractCegarLoop]: Abstraction has 8334 states and 12900 transitions. [2020-10-13 15:08:58,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:08:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 12900 transitions. [2020-10-13 15:08:58,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-13 15:08:58,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:08:58,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:08:58,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:08:58,584 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:08:58,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:08:58,584 INFO L82 PathProgramCache]: Analyzing trace with hash 306862749, now seen corresponding path program 1 times [2020-10-13 15:08:58,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:08:58,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937619306] [2020-10-13 15:08:58,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:08:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:58,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:59,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:03,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:03,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 15:09:03,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:09:03,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:09:03,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:09:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 15:09:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:09:03,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:04,368 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:09:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:09:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:04,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:09:04,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:09:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:09:04,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:09:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:09:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:09:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:09:04,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937619306] [2020-10-13 15:09:04,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:09:04,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:09:04,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536500958] [2020-10-13 15:09:04,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:09:04,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:09:04,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:09:04,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:09:04,459 INFO L87 Difference]: Start difference. First operand 8334 states and 12900 transitions. Second operand 4 states. [2020-10-13 15:09:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:09:11,691 INFO L93 Difference]: Finished difference Result 14633 states and 22512 transitions. [2020-10-13 15:09:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:09:11,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2020-10-13 15:09:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:09:11,714 INFO L225 Difference]: With dead ends: 14633 [2020-10-13 15:09:11,715 INFO L226 Difference]: Without dead ends: 9887 [2020-10-13 15:09:11,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:09:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9887 states. [2020-10-13 15:09:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9887 to 9227. [2020-10-13 15:09:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9227 states. [2020-10-13 15:09:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9227 states to 9227 states and 14369 transitions. [2020-10-13 15:09:12,257 INFO L78 Accepts]: Start accepts. Automaton has 9227 states and 14369 transitions. Word has length 329 [2020-10-13 15:09:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:09:12,257 INFO L479 AbstractCegarLoop]: Abstraction has 9227 states and 14369 transitions. [2020-10-13 15:09:12,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:09:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 9227 states and 14369 transitions. [2020-10-13 15:09:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-13 15:09:12,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:09:12,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:09:12,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:09:12,283 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:09:12,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:09:12,284 INFO L82 PathProgramCache]: Analyzing trace with hash -224818930, now seen corresponding path program 1 times [2020-10-13 15:09:12,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:09:12,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394205308] [2020-10-13 15:09:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:09:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:12,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:13,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:13,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:13,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:16,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:17,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-13 15:09:17,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:09:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 15:09:17,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:09:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:09:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:09:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:18,104 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:09:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:09:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:18,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:09:18,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:09:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:09:18,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:09:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:09:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:09:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:09:18,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394205308] [2020-10-13 15:09:18,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:09:18,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:09:18,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790204941] [2020-10-13 15:09:18,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:09:18,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:09:18,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:09:18,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:09:18,207 INFO L87 Difference]: Start difference. First operand 9227 states and 14369 transitions. Second operand 5 states. [2020-10-13 15:09:28,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:09:28,307 INFO L93 Difference]: Finished difference Result 24845 states and 38331 transitions. [2020-10-13 15:09:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:09:28,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-13 15:09:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:09:28,339 INFO L225 Difference]: With dead ends: 24845 [2020-10-13 15:09:28,339 INFO L226 Difference]: Without dead ends: 17429 [2020-10-13 15:09:28,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:09:28,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17429 states. [2020-10-13 15:09:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17429 to 10996. [2020-10-13 15:09:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10996 states. [2020-10-13 15:09:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10996 states to 10996 states and 17349 transitions. [2020-10-13 15:09:29,107 INFO L78 Accepts]: Start accepts. Automaton has 10996 states and 17349 transitions. Word has length 330 [2020-10-13 15:09:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:09:29,108 INFO L479 AbstractCegarLoop]: Abstraction has 10996 states and 17349 transitions. [2020-10-13 15:09:29,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:09:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10996 states and 17349 transitions. [2020-10-13 15:09:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 15:09:29,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:09:29,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:09:29,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:09:29,126 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:09:29,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:09:29,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1101665127, now seen corresponding path program 1 times [2020-10-13 15:09:29,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:09:29,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121272313] [2020-10-13 15:09:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:09:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:29,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:33,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:34,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:34,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 15:09:34,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:09:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 15:09:34,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:09:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 15:09:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:09:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:34,920 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:09:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:09:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:34,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:34,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:34,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:09:34,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:09:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:09:34,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:09:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:09:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:09:34,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:09:35,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121272313] [2020-10-13 15:09:35,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:09:35,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:09:35,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918601874] [2020-10-13 15:09:35,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:09:35,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:09:35,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:09:35,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:09:35,073 INFO L87 Difference]: Start difference. First operand 10996 states and 17349 transitions. Second operand 5 states. [2020-10-13 15:09:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:09:41,464 INFO L93 Difference]: Finished difference Result 17409 states and 27020 transitions. [2020-10-13 15:09:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:09:41,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-13 15:09:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:09:41,478 INFO L225 Difference]: With dead ends: 17409 [2020-10-13 15:09:41,478 INFO L226 Difference]: Without dead ends: 9734 [2020-10-13 15:09:41,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:09:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9734 states. [2020-10-13 15:09:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9734 to 9734. [2020-10-13 15:09:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9734 states. [2020-10-13 15:09:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 15338 transitions. [2020-10-13 15:09:42,128 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 15338 transitions. Word has length 332 [2020-10-13 15:09:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:09:42,129 INFO L479 AbstractCegarLoop]: Abstraction has 9734 states and 15338 transitions. [2020-10-13 15:09:42,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:09:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 15338 transitions. [2020-10-13 15:09:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 15:09:42,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:09:42,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:09:42,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:09:42,140 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:09:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:09:42,140 INFO L82 PathProgramCache]: Analyzing trace with hash -460284381, now seen corresponding path program 1 times [2020-10-13 15:09:42,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:09:42,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851133517] [2020-10-13 15:09:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:09:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:44,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:47,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:47,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 15:09:47,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:09:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 15:09:47,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:09:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:09:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 15:09:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:47,868 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:09:47,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:09:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:47,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:47,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:47,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:09:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:09:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:09:47,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:09:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:09:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:09:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:09:47,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851133517] [2020-10-13 15:09:47,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:09:47,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:09:47,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892299268] [2020-10-13 15:09:47,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:09:47,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:09:47,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:09:47,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:09:47,997 INFO L87 Difference]: Start difference. First operand 9734 states and 15338 transitions. Second operand 4 states. [2020-10-13 15:09:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:09:59,887 INFO L93 Difference]: Finished difference Result 24586 states and 38045 transitions. [2020-10-13 15:09:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:09:59,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-10-13 15:09:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:09:59,912 INFO L225 Difference]: With dead ends: 24586 [2020-10-13 15:09:59,913 INFO L226 Difference]: Without dead ends: 17643 [2020-10-13 15:09:59,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:09:59,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17643 states. [2020-10-13 15:10:01,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17643 to 17385. [2020-10-13 15:10:01,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17385 states. [2020-10-13 15:10:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 27012 transitions. [2020-10-13 15:10:01,533 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 27012 transitions. Word has length 332 [2020-10-13 15:10:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:10:01,533 INFO L479 AbstractCegarLoop]: Abstraction has 17385 states and 27012 transitions. [2020-10-13 15:10:01,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:10:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 27012 transitions. [2020-10-13 15:10:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-13 15:10:01,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:01,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:01,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:10:01,553 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:01,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2000339788, now seen corresponding path program 1 times [2020-10-13 15:10:01,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:01,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350644429] [2020-10-13 15:10:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:02,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:02,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:03,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:06,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:06,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 15:10:06,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:10:06,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:10:06,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:10:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 15:10:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 15:10:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:07,256 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:10:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:10:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:07,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:07,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:10:07,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:10:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:10:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:10:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:10:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:10:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:10:07,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350644429] [2020-10-13 15:10:07,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:10:07,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:10:07,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772395451] [2020-10-13 15:10:07,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:10:07,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:10:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:10:07,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:10:07,392 INFO L87 Difference]: Start difference. First operand 17385 states and 27012 transitions. Second operand 4 states. [2020-10-13 15:10:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:10:20,548 INFO L93 Difference]: Finished difference Result 43948 states and 67515 transitions. [2020-10-13 15:10:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:10:20,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-10-13 15:10:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:10:20,580 INFO L225 Difference]: With dead ends: 43948 [2020-10-13 15:10:20,580 INFO L226 Difference]: Without dead ends: 30288 [2020-10-13 15:10:20,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:10:20,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30288 states. [2020-10-13 15:10:22,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30288 to 29656. [2020-10-13 15:10:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29656 states. [2020-10-13 15:10:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29656 states to 29656 states and 45663 transitions. [2020-10-13 15:10:22,465 INFO L78 Accepts]: Start accepts. Automaton has 29656 states and 45663 transitions. Word has length 333 [2020-10-13 15:10:22,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:10:22,465 INFO L479 AbstractCegarLoop]: Abstraction has 29656 states and 45663 transitions. [2020-10-13 15:10:22,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:10:22,465 INFO L276 IsEmpty]: Start isEmpty. Operand 29656 states and 45663 transitions. [2020-10-13 15:10:22,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 15:10:22,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:22,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:22,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:10:22,487 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:22,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:22,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1630506299, now seen corresponding path program 1 times [2020-10-13 15:10:22,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:22,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912535263] [2020-10-13 15:10:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:23,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:23,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:27,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:27,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 15:10:27,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:10:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:10:27,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:10:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:10:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 15:10:27,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:28,232 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:10:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:10:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:28,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:28,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:10:28,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:10:28,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 15:10:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:10:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:10:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 15:10:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:10:28,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912535263] [2020-10-13 15:10:28,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:10:28,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:10:28,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124751010] [2020-10-13 15:10:28,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:10:28,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:10:28,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:10:28,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:10:28,369 INFO L87 Difference]: Start difference. First operand 29656 states and 45663 transitions. Second operand 6 states. [2020-10-13 15:10:28,965 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-13 15:10:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:10:38,508 INFO L93 Difference]: Finished difference Result 64802 states and 98527 transitions. [2020-10-13 15:10:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:10:38,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-10-13 15:10:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:10:38,553 INFO L225 Difference]: With dead ends: 64802 [2020-10-13 15:10:38,553 INFO L226 Difference]: Without dead ends: 45483 [2020-10-13 15:10:38,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:10:38,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45483 states. [2020-10-13 15:10:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45483 to 45428. [2020-10-13 15:10:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45428 states. [2020-10-13 15:10:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45428 states to 45428 states and 69362 transitions. [2020-10-13 15:10:41,549 INFO L78 Accepts]: Start accepts. Automaton has 45428 states and 69362 transitions. Word has length 334 [2020-10-13 15:10:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:10:41,549 INFO L479 AbstractCegarLoop]: Abstraction has 45428 states and 69362 transitions. [2020-10-13 15:10:41,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:10:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 45428 states and 69362 transitions. [2020-10-13 15:10:41,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 15:10:41,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:41,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:41,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:10:41,583 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:41,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:41,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1314242816, now seen corresponding path program 1 times [2020-10-13 15:10:41,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:41,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365013118] [2020-10-13 15:10:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:41,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking...