/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:13:42,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:13:42,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:13:42,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:13:42,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:13:42,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:13:42,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:13:42,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:13:42,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:13:42,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:13:42,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:13:42,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:13:42,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:13:42,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:13:42,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:13:42,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:13:42,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:13:42,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:13:42,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:13:42,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:13:42,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:13:42,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:13:42,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:13:42,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:13:42,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:13:42,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:13:42,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:13:42,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:13:42,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:13:42,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:13:42,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:13:42,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:13:42,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:13:42,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:13:42,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:13:42,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:13:42,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:13:42,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:13:42,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:13:42,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:13:42,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:13:42,256 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 [2020-10-12 19:13:42,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:13:42,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:13:42,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:13:42,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:13:42,290 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:13:42,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:13:42,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:13:42,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:13:42,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:13:42,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:13:42,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:13:42,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:13:42,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:13:42,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:13:42,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:13:42,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:13:42,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:13:42,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:13:42,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:13:42,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:13:42,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:13:42,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:13:42,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:13:42,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:13:42,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:13:42,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:13:42,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:13:42,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:13:42,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:13:42,295 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:13:42,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:13:42,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:13:42,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:13:42,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:13:42,624 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:13:42,624 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:13:42,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7540f4615/e61349c18a684218960d41e457621196/FLAGb0d2f7a0b [2020-10-12 19:13:43,243 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:13:43,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:13:43,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7540f4615/e61349c18a684218960d41e457621196/FLAGb0d2f7a0b [2020-10-12 19:13:43,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7540f4615/e61349c18a684218960d41e457621196 [2020-10-12 19:13:43,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:13:43,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:13:43,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:13:43,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:13:43,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:13:43,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:13:43" (1/1) ... [2020-10-12 19:13:43,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f71ec06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:43, skipping insertion in model container [2020-10-12 19:13:43,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:13:43" (1/1) ... [2020-10-12 19:13:43,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:13:43,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:13:44,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:13:44,314 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:13:44,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:13:44,560 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:13:44,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44 WrapperNode [2020-10-12 19:13:44,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:13:44,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:13:44,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:13:44,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:13:44,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (1/1) ... [2020-10-12 19:13:44,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (1/1) ... [2020-10-12 19:13:44,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (1/1) ... [2020-10-12 19:13:44,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (1/1) ... [2020-10-12 19:13:44,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (1/1) ... [2020-10-12 19:13:44,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (1/1) ... [2020-10-12 19:13:44,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (1/1) ... [2020-10-12 19:13:44,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:13:44,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:13:44,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:13:44,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:13:44,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (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 [2020-10-12 19:13:44,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:13:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:13:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:13:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:13:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:13:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:13:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:13:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:13:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:13:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:13:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:13:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:13:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:13:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:13:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:13:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:13:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:13:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:13:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:13:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:13:46,460 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:13:46,461 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:13:46,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:13:46 BoogieIcfgContainer [2020-10-12 19:13:46,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:13:46,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:13:46,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:13:46,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:13:46,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:13:43" (1/3) ... [2020-10-12 19:13:46,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbaa600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:13:46, skipping insertion in model container [2020-10-12 19:13:46,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:44" (2/3) ... [2020-10-12 19:13:46,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbaa600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:13:46, skipping insertion in model container [2020-10-12 19:13:46,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:13:46" (3/3) ... [2020-10-12 19:13:46,477 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:13:46,488 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:13:46,496 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-12 19:13:46,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-12 19:13:46,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:13:46,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:13:46,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:13:46,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:13:46,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:13:46,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:13:46,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:13:46,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:13:46,562 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states. [2020-10-12 19:13:46,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 19:13:46,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:46,581 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] [2020-10-12 19:13:46,581 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:46,588 INFO L82 PathProgramCache]: Analyzing trace with hash 32558119, now seen corresponding path program 1 times [2020-10-12 19:13:46,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:46,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438161980] [2020-10-12 19:13:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:52,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 19:13:52,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:13:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:13:52,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:13:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:13:52,631 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:13:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:52,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:52,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:13:52,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:52,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438161980] [2020-10-12 19:13:52,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:52,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:52,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546223230] [2020-10-12 19:13:52,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:52,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:52,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:52,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:52,779 INFO L87 Difference]: Start difference. First operand 382 states. Second operand 5 states. [2020-10-12 19:13:56,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:56,658 INFO L93 Difference]: Finished difference Result 1093 states and 1965 transitions. [2020-10-12 19:13:56,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:13:56,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-12 19:13:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:56,694 INFO L225 Difference]: With dead ends: 1093 [2020-10-12 19:13:56,694 INFO L226 Difference]: Without dead ends: 728 [2020-10-12 19:13:56,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:13:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-12 19:13:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 703. [2020-10-12 19:13:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-10-12 19:13:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1004 transitions. [2020-10-12 19:13:56,865 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1004 transitions. Word has length 143 [2020-10-12 19:13:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:56,866 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 1004 transitions. [2020-10-12 19:13:56,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1004 transitions. [2020-10-12 19:13:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 19:13:56,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:56,881 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] [2020-10-12 19:13:56,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:13:56,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:56,882 INFO L82 PathProgramCache]: Analyzing trace with hash 457807380, now seen corresponding path program 1 times [2020-10-12 19:13:56,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:56,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235441755] [2020-10-12 19:13:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:58,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:01,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 19:14:01,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:14:01,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:14:01,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:14:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:02,264 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:02,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:02,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:02,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:02,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:14:02,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:02,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:02,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:02,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:02,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235441755] [2020-10-12 19:14:02,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:02,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:02,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776213707] [2020-10-12 19:14:02,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:02,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:02,411 INFO L87 Difference]: Start difference. First operand 703 states and 1004 transitions. Second operand 5 states. [2020-10-12 19:14:05,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:05,227 INFO L93 Difference]: Finished difference Result 2035 states and 2895 transitions. [2020-10-12 19:14:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:05,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-12 19:14:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:05,236 INFO L225 Difference]: With dead ends: 2035 [2020-10-12 19:14:05,236 INFO L226 Difference]: Without dead ends: 1360 [2020-10-12 19:14:05,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:05,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-12 19:14:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1335. [2020-10-12 19:14:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-12 19:14:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1894 transitions. [2020-10-12 19:14:05,311 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1894 transitions. Word has length 144 [2020-10-12 19:14:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:05,312 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1894 transitions. [2020-10-12 19:14:05,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1894 transitions. [2020-10-12 19:14:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 19:14:05,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:05,315 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] [2020-10-12 19:14:05,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:14:05,316 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:05,316 INFO L82 PathProgramCache]: Analyzing trace with hash 136857986, now seen corresponding path program 1 times [2020-10-12 19:14:05,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:05,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010994446] [2020-10-12 19:14:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:05,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:10,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:10,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 19:14:10,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:14:10,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:14:10,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 19:14:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:10,681 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:10,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:10,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:10,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:10,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 19:14:10,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:10,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010994446] [2020-10-12 19:14:10,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:10,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:10,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134636860] [2020-10-12 19:14:10,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:10,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:10,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:10,807 INFO L87 Difference]: Start difference. First operand 1335 states and 1894 transitions. Second operand 5 states. [2020-10-12 19:14:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:13,535 INFO L93 Difference]: Finished difference Result 3853 states and 5434 transitions. [2020-10-12 19:14:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:13,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-12 19:14:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:13,549 INFO L225 Difference]: With dead ends: 3853 [2020-10-12 19:14:13,549 INFO L226 Difference]: Without dead ends: 2570 [2020-10-12 19:14:13,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2020-10-12 19:14:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2545. [2020-10-12 19:14:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2545 states. [2020-10-12 19:14:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3571 transitions. [2020-10-12 19:14:13,663 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3571 transitions. Word has length 145 [2020-10-12 19:14:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:13,664 INFO L479 AbstractCegarLoop]: Abstraction has 2545 states and 3571 transitions. [2020-10-12 19:14:13,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3571 transitions. [2020-10-12 19:14:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 19:14:13,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:13,669 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] [2020-10-12 19:14:13,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:14:13,670 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:13,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1980089750, now seen corresponding path program 1 times [2020-10-12 19:14:13,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:13,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296190900] [2020-10-12 19:14:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:13,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:13,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:13,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:15,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:18,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:18,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 19:14:18,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:14:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:14:18,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 19:14:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 19:14:18,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:19,064 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:19,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:19,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:19,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:14:19,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:19,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296190900] [2020-10-12 19:14:19,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:19,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:19,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235194482] [2020-10-12 19:14:19,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:19,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:19,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:19,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:19,151 INFO L87 Difference]: Start difference. First operand 2545 states and 3571 transitions. Second operand 5 states. [2020-10-12 19:14:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:21,070 INFO L93 Difference]: Finished difference Result 4165 states and 5872 transitions. [2020-10-12 19:14:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:21,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-12 19:14:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:21,082 INFO L225 Difference]: With dead ends: 4165 [2020-10-12 19:14:21,082 INFO L226 Difference]: Without dead ends: 1976 [2020-10-12 19:14:21,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-10-12 19:14:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1972. [2020-10-12 19:14:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2020-10-12 19:14:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2757 transitions. [2020-10-12 19:14:21,162 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2757 transitions. Word has length 146 [2020-10-12 19:14:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:21,163 INFO L479 AbstractCegarLoop]: Abstraction has 1972 states and 2757 transitions. [2020-10-12 19:14:21,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2757 transitions. [2020-10-12 19:14:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 19:14:21,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:21,167 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] [2020-10-12 19:14:21,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:14:21,167 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:21,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1548630470, now seen corresponding path program 1 times [2020-10-12 19:14:21,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:21,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044008689] [2020-10-12 19:14:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:21,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:21,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:23,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:26,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 19:14:26,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:14:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:14:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:14:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:26,523 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:26,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:26,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:26,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:14:26,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:26,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044008689] [2020-10-12 19:14:26,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:26,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:26,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563537357] [2020-10-12 19:14:26,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:26,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:26,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:26,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:26,605 INFO L87 Difference]: Start difference. First operand 1972 states and 2757 transitions. Second operand 5 states. [2020-10-12 19:14:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:29,420 INFO L93 Difference]: Finished difference Result 5113 states and 7113 transitions. [2020-10-12 19:14:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:29,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 19:14:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:29,435 INFO L225 Difference]: With dead ends: 5113 [2020-10-12 19:14:29,435 INFO L226 Difference]: Without dead ends: 3221 [2020-10-12 19:14:29,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2020-10-12 19:14:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 3194. [2020-10-12 19:14:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-10-12 19:14:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4411 transitions. [2020-10-12 19:14:29,581 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4411 transitions. Word has length 153 [2020-10-12 19:14:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:29,581 INFO L479 AbstractCegarLoop]: Abstraction has 3194 states and 4411 transitions. [2020-10-12 19:14:29,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4411 transitions. [2020-10-12 19:14:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 19:14:29,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:29,587 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] [2020-10-12 19:14:29,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:14:29,588 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:29,588 INFO L82 PathProgramCache]: Analyzing trace with hash 151056600, now seen corresponding path program 1 times [2020-10-12 19:14:29,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:29,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656322777] [2020-10-12 19:14:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:29,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:29,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:30,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:31,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:34,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 19:14:34,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:14:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:14:34,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 19:14:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:34,937 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:34,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:34,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:34,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:34,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:14:34,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:35,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656322777] [2020-10-12 19:14:35,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:35,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:35,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484829399] [2020-10-12 19:14:35,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:35,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:35,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:35,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:35,024 INFO L87 Difference]: Start difference. First operand 3194 states and 4411 transitions. Second operand 5 states. [2020-10-12 19:14:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:38,183 INFO L93 Difference]: Finished difference Result 8669 states and 12014 transitions. [2020-10-12 19:14:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:38,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 19:14:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:38,208 INFO L225 Difference]: With dead ends: 8669 [2020-10-12 19:14:38,208 INFO L226 Difference]: Without dead ends: 6149 [2020-10-12 19:14:38,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2020-10-12 19:14:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 6129. [2020-10-12 19:14:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6129 states. [2020-10-12 19:14:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 8343 transitions. [2020-10-12 19:14:38,546 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 8343 transitions. Word has length 154 [2020-10-12 19:14:38,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:38,549 INFO L479 AbstractCegarLoop]: Abstraction has 6129 states and 8343 transitions. [2020-10-12 19:14:38,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 8343 transitions. [2020-10-12 19:14:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 19:14:38,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:38,567 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] [2020-10-12 19:14:38,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:14:38,568 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:38,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1724177797, now seen corresponding path program 1 times [2020-10-12 19:14:38,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:38,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821844708] [2020-10-12 19:14:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:38,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:40,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:43,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:43,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 19:14:43,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:14:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:14:43,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 19:14:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 19:14:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:43,879 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:43,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:43,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:43,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:43,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:14:43,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:43,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:43,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821844708] [2020-10-12 19:14:43,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:43,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:43,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998451612] [2020-10-12 19:14:43,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:43,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:43,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:43,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:43,931 INFO L87 Difference]: Start difference. First operand 6129 states and 8343 transitions. Second operand 5 states. [2020-10-12 19:14:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:45,551 INFO L93 Difference]: Finished difference Result 10736 states and 14574 transitions. [2020-10-12 19:14:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:45,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 19:14:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:45,567 INFO L225 Difference]: With dead ends: 10736 [2020-10-12 19:14:45,567 INFO L226 Difference]: Without dead ends: 4715 [2020-10-12 19:14:45,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2020-10-12 19:14:45,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4709. [2020-10-12 19:14:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4709 states. [2020-10-12 19:14:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 6377 transitions. [2020-10-12 19:14:45,822 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 6377 transitions. Word has length 155 [2020-10-12 19:14:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:45,822 INFO L479 AbstractCegarLoop]: Abstraction has 4709 states and 6377 transitions. [2020-10-12 19:14:45,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 6377 transitions. [2020-10-12 19:14:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 19:14:45,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:45,831 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] [2020-10-12 19:14:45,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:14:45,832 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:45,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1697367834, now seen corresponding path program 1 times [2020-10-12 19:14:45,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:45,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430914204] [2020-10-12 19:14:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:50,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:50,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 19:14:50,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:14:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:14:50,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 19:14:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:51,134 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:51,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:51,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:51,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:14:51,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:51,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430914204] [2020-10-12 19:14:51,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:51,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:51,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178216551] [2020-10-12 19:14:51,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:51,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:51,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:51,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:51,180 INFO L87 Difference]: Start difference. First operand 4709 states and 6377 transitions. Second operand 5 states. [2020-10-12 19:14:51,446 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 19:14:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:54,380 INFO L93 Difference]: Finished difference Result 8086 states and 10881 transitions. [2020-10-12 19:14:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:14:54,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-12 19:14:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:54,396 INFO L225 Difference]: With dead ends: 8086 [2020-10-12 19:14:54,396 INFO L226 Difference]: Without dead ends: 4710 [2020-10-12 19:14:54,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:14:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2020-10-12 19:14:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4686. [2020-10-12 19:14:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4686 states. [2020-10-12 19:14:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 6296 transitions. [2020-10-12 19:14:54,623 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 6296 transitions. Word has length 162 [2020-10-12 19:14:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:54,624 INFO L479 AbstractCegarLoop]: Abstraction has 4686 states and 6296 transitions. [2020-10-12 19:14:54,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 6296 transitions. [2020-10-12 19:14:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 19:14:54,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:54,638 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] [2020-10-12 19:14:54,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:14:54,638 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:54,639 INFO L82 PathProgramCache]: Analyzing trace with hash 348740964, now seen corresponding path program 1 times [2020-10-12 19:14:54,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:54,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530466139] [2020-10-12 19:14:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:59,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:59,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 19:14:59,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:14:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:14:59,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 19:14:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:59,979 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:59,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:59,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:59,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:59,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:14:59,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:59,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:59,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:59,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:59,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:00,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530466139] [2020-10-12 19:15:00,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:00,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:00,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244130319] [2020-10-12 19:15:00,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:00,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:00,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:00,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:00,049 INFO L87 Difference]: Start difference. First operand 4686 states and 6296 transitions. Second operand 5 states. [2020-10-12 19:15:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:03,434 INFO L93 Difference]: Finished difference Result 11521 states and 15594 transitions. [2020-10-12 19:15:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:15:03,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-12 19:15:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:03,457 INFO L225 Difference]: With dead ends: 11521 [2020-10-12 19:15:03,457 INFO L226 Difference]: Without dead ends: 7632 [2020-10-12 19:15:03,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7632 states. [2020-10-12 19:15:03,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7632 to 7599. [2020-10-12 19:15:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7599 states. [2020-10-12 19:15:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7599 states to 7599 states and 10070 transitions. [2020-10-12 19:15:03,788 INFO L78 Accepts]: Start accepts. Automaton has 7599 states and 10070 transitions. Word has length 163 [2020-10-12 19:15:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:03,788 INFO L479 AbstractCegarLoop]: Abstraction has 7599 states and 10070 transitions. [2020-10-12 19:15:03,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7599 states and 10070 transitions. [2020-10-12 19:15:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 19:15:03,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:03,797 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] [2020-10-12 19:15:03,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:15:03,798 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:03,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:03,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2015997001, now seen corresponding path program 1 times [2020-10-12 19:15:03,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:03,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560133876] [2020-10-12 19:15:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:03,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:08,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:08,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 19:15:08,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:15:08,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:15:08,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:08,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:08,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:15:08,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:15:08,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:09,098 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:15:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:09,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:09,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:09,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:09,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:15:09,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:09,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:09,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:09,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560133876] [2020-10-12 19:15:09,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:09,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:09,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394437616] [2020-10-12 19:15:09,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:09,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:09,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:09,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:09,139 INFO L87 Difference]: Start difference. First operand 7599 states and 10070 transitions. Second operand 5 states. [2020-10-12 19:15:09,410 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 19:15:12,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:12,784 INFO L93 Difference]: Finished difference Result 13381 states and 17762 transitions. [2020-10-12 19:15:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:15:12,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-12 19:15:12,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:12,801 INFO L225 Difference]: With dead ends: 13381 [2020-10-12 19:15:12,802 INFO L226 Difference]: Without dead ends: 7690 [2020-10-12 19:15:12,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:15:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2020-10-12 19:15:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 7617. [2020-10-12 19:15:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7617 states. [2020-10-12 19:15:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7617 states to 7617 states and 10051 transitions. [2020-10-12 19:15:13,277 INFO L78 Accepts]: Start accepts. Automaton has 7617 states and 10051 transitions. Word has length 164 [2020-10-12 19:15:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:13,278 INFO L479 AbstractCegarLoop]: Abstraction has 7617 states and 10051 transitions. [2020-10-12 19:15:13,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7617 states and 10051 transitions. [2020-10-12 19:15:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 19:15:13,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:13,287 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] [2020-10-12 19:15:13,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:15:13,288 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:13,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:13,289 INFO L82 PathProgramCache]: Analyzing trace with hash 233184521, now seen corresponding path program 1 times [2020-10-12 19:15:13,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:13,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891538763] [2020-10-12 19:15:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:18,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:18,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 19:15:18,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:15:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:15:18,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 19:15:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 19:15:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:18,605 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:15:18,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:18,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:18,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:18,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:15:18,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:18,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891538763] [2020-10-12 19:15:18,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:18,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:18,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457830471] [2020-10-12 19:15:18,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:18,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:18,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:18,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:18,642 INFO L87 Difference]: Start difference. First operand 7617 states and 10051 transitions. Second operand 5 states. [2020-10-12 19:15:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:20,369 INFO L93 Difference]: Finished difference Result 12101 states and 16089 transitions. [2020-10-12 19:15:20,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:15:20,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-12 19:15:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:20,383 INFO L225 Difference]: With dead ends: 12101 [2020-10-12 19:15:20,384 INFO L226 Difference]: Without dead ends: 6492 [2020-10-12 19:15:20,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6492 states. [2020-10-12 19:15:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6492 to 6474. [2020-10-12 19:15:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6474 states. [2020-10-12 19:15:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 8515 transitions. [2020-10-12 19:15:20,793 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 8515 transitions. Word has length 165 [2020-10-12 19:15:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:20,793 INFO L479 AbstractCegarLoop]: Abstraction has 6474 states and 8515 transitions. [2020-10-12 19:15:20,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 8515 transitions. [2020-10-12 19:15:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:15:20,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:20,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:15:20,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:15:20,802 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:20,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:20,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1340285656, now seen corresponding path program 1 times [2020-10-12 19:15:20,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:20,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022647807] [2020-10-12 19:15:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:21,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:25,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:25,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:15:25,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:15:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:15:25,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:15:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:15:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 19:15:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:26,398 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:15:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:26,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:26,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:26,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:26,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:15:26,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:15:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:15:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:26,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022647807] [2020-10-12 19:15:26,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:26,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:15:26,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866203876] [2020-10-12 19:15:26,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:15:26,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:26,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:15:26,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:15:26,491 INFO L87 Difference]: Start difference. First operand 6474 states and 8515 transitions. Second operand 14 states. [2020-10-12 19:15:27,180 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-12 19:15:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:37,762 INFO L93 Difference]: Finished difference Result 39332 states and 54930 transitions. [2020-10-12 19:15:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-12 19:15:37,762 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 171 [2020-10-12 19:15:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:37,804 INFO L225 Difference]: With dead ends: 39332 [2020-10-12 19:15:37,804 INFO L226 Difference]: Without dead ends: 34056 [2020-10-12 19:15:37,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1146, Invalid=3824, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 19:15:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34056 states. [2020-10-12 19:15:39,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34056 to 13514. [2020-10-12 19:15:39,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13514 states. [2020-10-12 19:15:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13514 states to 13514 states and 18050 transitions. [2020-10-12 19:15:39,125 INFO L78 Accepts]: Start accepts. Automaton has 13514 states and 18050 transitions. Word has length 171 [2020-10-12 19:15:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:39,125 INFO L479 AbstractCegarLoop]: Abstraction has 13514 states and 18050 transitions. [2020-10-12 19:15:39,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:15:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 13514 states and 18050 transitions. [2020-10-12 19:15:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:15:39,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:39,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:15:39,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:15:39,135 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:39,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1777392483, now seen corresponding path program 1 times [2020-10-12 19:15:39,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:39,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237436892] [2020-10-12 19:15:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:39,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:42,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:43,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:44,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:44,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:15:44,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:15:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:15:44,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:15:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:15:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:15:44,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:44,683 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:15:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:44,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:44,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:44,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:15:44,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:15:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:15:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:44,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237436892] [2020-10-12 19:15:44,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:44,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:15:44,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97266751] [2020-10-12 19:15:44,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:15:44,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:44,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:15:44,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:15:44,755 INFO L87 Difference]: Start difference. First operand 13514 states and 18050 transitions. Second operand 14 states. [2020-10-12 19:15:45,365 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 203 [2020-10-12 19:15:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:52,267 INFO L93 Difference]: Finished difference Result 34169 states and 47117 transitions. [2020-10-12 19:15:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:15:52,268 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 171 [2020-10-12 19:15:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:52,298 INFO L225 Difference]: With dead ends: 34169 [2020-10-12 19:15:52,298 INFO L226 Difference]: Without dead ends: 26822 [2020-10-12 19:15:52,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:15:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26822 states. [2020-10-12 19:15:53,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26822 to 17926. [2020-10-12 19:15:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17926 states. [2020-10-12 19:15:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17926 states to 17926 states and 24168 transitions. [2020-10-12 19:15:53,503 INFO L78 Accepts]: Start accepts. Automaton has 17926 states and 24168 transitions. Word has length 171 [2020-10-12 19:15:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:53,504 INFO L479 AbstractCegarLoop]: Abstraction has 17926 states and 24168 transitions. [2020-10-12 19:15:53,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:15:53,504 INFO L276 IsEmpty]: Start isEmpty. Operand 17926 states and 24168 transitions. [2020-10-12 19:15:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:15:53,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:53,516 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] [2020-10-12 19:15:53,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:15:53,516 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:53,517 INFO L82 PathProgramCache]: Analyzing trace with hash 937117574, now seen corresponding path program 1 times [2020-10-12 19:15:53,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:53,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634125524] [2020-10-12 19:15:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:53,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:53,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:58,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:58,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:15:58,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:15:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:15:58,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:15:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:15:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:15:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:59,189 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:15:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:59,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:59,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:15:59,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:59,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634125524] [2020-10-12 19:15:59,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:59,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:15:59,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787900658] [2020-10-12 19:15:59,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:15:59,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:59,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:15:59,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:15:59,260 INFO L87 Difference]: Start difference. First operand 17926 states and 24168 transitions. Second operand 14 states. [2020-10-12 19:15:59,626 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-12 19:16:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:06,481 INFO L93 Difference]: Finished difference Result 29535 states and 39963 transitions. [2020-10-12 19:16:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:16:06,482 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 171 [2020-10-12 19:16:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:06,501 INFO L225 Difference]: With dead ends: 29535 [2020-10-12 19:16:06,501 INFO L226 Difference]: Without dead ends: 20778 [2020-10-12 19:16:06,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:16:06,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20778 states. [2020-10-12 19:16:07,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20778 to 17824. [2020-10-12 19:16:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17824 states. [2020-10-12 19:16:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17824 states to 17824 states and 23982 transitions. [2020-10-12 19:16:07,679 INFO L78 Accepts]: Start accepts. Automaton has 17824 states and 23982 transitions. Word has length 171 [2020-10-12 19:16:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:07,679 INFO L479 AbstractCegarLoop]: Abstraction has 17824 states and 23982 transitions. [2020-10-12 19:16:07,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:16:07,679 INFO L276 IsEmpty]: Start isEmpty. Operand 17824 states and 23982 transitions. [2020-10-12 19:16:07,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:16:07,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:07,691 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] [2020-10-12 19:16:07,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:16:07,692 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:07,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2054232014, now seen corresponding path program 1 times [2020-10-12 19:16:07,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:07,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596518565] [2020-10-12 19:16:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:07,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:08,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:12,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:12,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:16:12,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:16:12,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:16:12,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:16:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:16:12,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:16:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:13,570 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:16:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:13,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:13,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:13,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:16:13,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:16:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:16:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:16:13,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596518565] [2020-10-12 19:16:13,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:13,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 19:16:13,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42126337] [2020-10-12 19:16:13,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:16:13,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:13,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:16:13,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:16:13,647 INFO L87 Difference]: Start difference. First operand 17824 states and 23982 transitions. Second operand 17 states. [2020-10-12 19:16:14,042 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 19:16:14,927 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-12 19:16:15,139 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-12 19:16:15,421 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-12 19:16:15,584 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-12 19:16:16,001 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-12 19:16:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:24,637 INFO L93 Difference]: Finished difference Result 37075 states and 51000 transitions. [2020-10-12 19:16:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:16:24,638 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 171 [2020-10-12 19:16:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:24,665 INFO L225 Difference]: With dead ends: 37075 [2020-10-12 19:16:24,665 INFO L226 Difference]: Without dead ends: 28734 [2020-10-12 19:16:24,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:16:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28734 states. [2020-10-12 19:16:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28734 to 16358. [2020-10-12 19:16:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16358 states. [2020-10-12 19:16:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16358 states to 16358 states and 21901 transitions. [2020-10-12 19:16:26,026 INFO L78 Accepts]: Start accepts. Automaton has 16358 states and 21901 transitions. Word has length 171 [2020-10-12 19:16:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:26,026 INFO L479 AbstractCegarLoop]: Abstraction has 16358 states and 21901 transitions. [2020-10-12 19:16:26,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:16:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16358 states and 21901 transitions. [2020-10-12 19:16:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:16:26,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:26,038 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] [2020-10-12 19:16:26,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:16:26,038 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash -878684331, now seen corresponding path program 1 times [2020-10-12 19:16:26,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:26,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886971818] [2020-10-12 19:16:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:26,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:31,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:31,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:16:31,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:16:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:16:31,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:16:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:16:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 19:16:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:31,473 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:16:31,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:31,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:31,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:31,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:16:31,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:16:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:16:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:16:31,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886971818] [2020-10-12 19:16:31,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:31,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:16:31,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339755562] [2020-10-12 19:16:31,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:16:31,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:16:31,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:16:31,555 INFO L87 Difference]: Start difference. First operand 16358 states and 21901 transitions. Second operand 12 states. [2020-10-12 19:16:31,701 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-10-12 19:16:32,270 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-12 19:16:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:42,201 INFO L93 Difference]: Finished difference Result 53395 states and 75454 transitions. [2020-10-12 19:16:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:16:42,202 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 171 [2020-10-12 19:16:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:42,256 INFO L225 Difference]: With dead ends: 53395 [2020-10-12 19:16:42,256 INFO L226 Difference]: Without dead ends: 47588 [2020-10-12 19:16:42,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:16:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47588 states. [2020-10-12 19:16:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47588 to 16535. [2020-10-12 19:16:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16535 states. [2020-10-12 19:16:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16535 states to 16535 states and 22122 transitions. [2020-10-12 19:16:44,050 INFO L78 Accepts]: Start accepts. Automaton has 16535 states and 22122 transitions. Word has length 171 [2020-10-12 19:16:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:44,051 INFO L479 AbstractCegarLoop]: Abstraction has 16535 states and 22122 transitions. [2020-10-12 19:16:44,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:16:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 16535 states and 22122 transitions. [2020-10-12 19:16:44,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:16:44,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:44,059 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] [2020-10-12 19:16:44,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:16:44,060 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:44,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2055973488, now seen corresponding path program 1 times [2020-10-12 19:16:44,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:44,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425397199] [2020-10-12 19:16:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:49,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:49,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:16:49,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:16:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:16:49,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:16:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:16:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 19:16:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:49,441 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:16:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:49,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:16:49,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425397199] [2020-10-12 19:16:49,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:49,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:16:49,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860333621] [2020-10-12 19:16:49,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:16:49,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:49,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:16:49,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:16:49,513 INFO L87 Difference]: Start difference. First operand 16535 states and 22122 transitions. Second operand 11 states. [2020-10-12 19:16:49,821 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:16:59,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:59,425 INFO L93 Difference]: Finished difference Result 58450 states and 81903 transitions. [2020-10-12 19:16:59,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:16:59,425 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-10-12 19:16:59,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:59,482 INFO L225 Difference]: With dead ends: 58450 [2020-10-12 19:16:59,482 INFO L226 Difference]: Without dead ends: 43661 [2020-10-12 19:16:59,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:16:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43661 states. [2020-10-12 19:17:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43661 to 17640. [2020-10-12 19:17:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17640 states. [2020-10-12 19:17:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17640 states to 17640 states and 23564 transitions. [2020-10-12 19:17:01,570 INFO L78 Accepts]: Start accepts. Automaton has 17640 states and 23564 transitions. Word has length 171 [2020-10-12 19:17:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:01,570 INFO L479 AbstractCegarLoop]: Abstraction has 17640 states and 23564 transitions. [2020-10-12 19:17:01,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:17:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 17640 states and 23564 transitions. [2020-10-12 19:17:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 19:17:01,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:01,578 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] [2020-10-12 19:17:01,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:17:01,578 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:01,579 INFO L82 PathProgramCache]: Analyzing trace with hash 312250852, now seen corresponding path program 1 times [2020-10-12 19:17:01,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:01,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029789784] [2020-10-12 19:17:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:01,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:05,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:05,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:06,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:06,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 19:17:06,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:17:06,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 19:17:06,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:17:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 19:17:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 19:17:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:07,287 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:17:07,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:07,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:07,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:07,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:17:07,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:07,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:17:07,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029789784] [2020-10-12 19:17:07,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:07,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:17:07,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012127815] [2020-10-12 19:17:07,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:17:07,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:17:07,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:17:07,388 INFO L87 Difference]: Start difference. First operand 17640 states and 23564 transitions. Second operand 16 states. [2020-10-12 19:17:07,589 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-12 19:17:08,469 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 236