/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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:28:18,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:28:18,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:28:18,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:28:18,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:28:18,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:28:18,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:28:18,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:28:18,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:28:18,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:28:18,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:28:18,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:28:18,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:28:18,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:28:18,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:28:18,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:28:18,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:28:18,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:28:18,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:28:18,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:28:18,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:28:18,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:28:18,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:28:18,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:28:18,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:28:18,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:28:18,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:28:18,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:28:18,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:28:18,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:28:18,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:28:18,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:28:18,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:28:18,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:28:18,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:28:18,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:28:18,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:28:18,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:28:18,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:28:18,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:28:18,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:28:18,265 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 19:28:18,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:28:18,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:28:18,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:28:18,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:28:18,314 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:28:18,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:28:18,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:28:18,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:28:18,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:28:18,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:28:18,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:28:18,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:28:18,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:28:18,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:28:18,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:28:18,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:28:18,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:28:18,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:28:18,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:28:18,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:28:18,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:28:18,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:28:18,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:28:18,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:28:18,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:28:18,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:28:18,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:28:18,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:28:18,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:28:18,320 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 19:28:18,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:28:18,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:28:18,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:28:18,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:28:18,678 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:28:18,679 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:28:18,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d45252ca/8cde70e2ab89452dbf06b7edd2aa6341/FLAG21a9212e5 [2020-10-12 19:28:19,351 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:28:19,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:28:19,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d45252ca/8cde70e2ab89452dbf06b7edd2aa6341/FLAG21a9212e5 [2020-10-12 19:28:19,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d45252ca/8cde70e2ab89452dbf06b7edd2aa6341 [2020-10-12 19:28:19,644 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:28:19,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:28:19,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:28:19,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:28:19,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:28:19,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:28:19" (1/1) ... [2020-10-12 19:28:19,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248aaf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:19, skipping insertion in model container [2020-10-12 19:28:19,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:28:19" (1/1) ... [2020-10-12 19:28:19,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:28:19,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:28:20,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:28:20,282 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:28:20,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:28:20,444 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:28:20,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20 WrapperNode [2020-10-12 19:28:20,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:28:20,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:28:20,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:28:20,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:28:20,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (1/1) ... [2020-10-12 19:28:20,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (1/1) ... [2020-10-12 19:28:20,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (1/1) ... [2020-10-12 19:28:20,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (1/1) ... [2020-10-12 19:28:20,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (1/1) ... [2020-10-12 19:28:20,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (1/1) ... [2020-10-12 19:28:20,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (1/1) ... [2020-10-12 19:28:20,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:28:20,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:28:20,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:28:20,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:28:20,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (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 19:28:20,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:28:20,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:28:20,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:28:20,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:28:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:28:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:28:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:28:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:28:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:28:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:28:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:28:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:28:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:28:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:28:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:28:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:28:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:28:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:28:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:28:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:28:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:28:22,160 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:28:22,160 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:28:22,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:28:22 BoogieIcfgContainer [2020-10-12 19:28:22,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:28:22,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:28:22,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:28:22,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:28:22,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:28:19" (1/3) ... [2020-10-12 19:28:22,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739ab5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:28:22, skipping insertion in model container [2020-10-12 19:28:22,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:20" (2/3) ... [2020-10-12 19:28:22,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739ab5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:28:22, skipping insertion in model container [2020-10-12 19:28:22,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:28:22" (3/3) ... [2020-10-12 19:28:22,177 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:28:22,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:28:22,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-12 19:28:22,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-12 19:28:22,244 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:28:22,244 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:28:22,244 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:28:22,244 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:28:22,245 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:28:22,245 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:28:22,245 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:28:22,245 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:28:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states. [2020-10-12 19:28:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 19:28:22,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:22,288 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] [2020-10-12 19:28:22,288 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:22,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:22,295 INFO L82 PathProgramCache]: Analyzing trace with hash -961922544, now seen corresponding path program 1 times [2020-10-12 19:28:22,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:22,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953808331] [2020-10-12 19:28:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:27,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:27,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 19:28:27,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:28:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:28:27,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:27,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:28:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:28:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:28:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:28:28,220 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:28:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:28,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:28,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:28,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 19:28:28,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:28:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:28:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:28,294 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 19:28:28,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953808331] [2020-10-12 19:28:28,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:28,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:28:28,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413820342] [2020-10-12 19:28:28,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:28:28,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:28,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:28:28,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:28:28,326 INFO L87 Difference]: Start difference. First operand 271 states. Second operand 15 states. [2020-10-12 19:28:28,777 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 19:28:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:31,774 INFO L93 Difference]: Finished difference Result 630 states and 1015 transitions. [2020-10-12 19:28:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:28:31,776 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-12 19:28:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:31,816 INFO L225 Difference]: With dead ends: 630 [2020-10-12 19:28:31,816 INFO L226 Difference]: Without dead ends: 424 [2020-10-12 19:28:31,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:28:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-12 19:28:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 286. [2020-10-12 19:28:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-12 19:28:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 375 transitions. [2020-10-12 19:28:31,945 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 375 transitions. Word has length 51 [2020-10-12 19:28:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:31,946 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 375 transitions. [2020-10-12 19:28:31,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:28:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 375 transitions. [2020-10-12 19:28:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 19:28:31,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:31,956 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] [2020-10-12 19:28:31,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:28:31,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:31,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2052042303, now seen corresponding path program 1 times [2020-10-12 19:28:31,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:31,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305948161] [2020-10-12 19:28:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:36,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:36,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 19:28:36,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:28:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:28:37,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:28:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:28:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:28:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:28:37,523 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:28:37,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:37,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:37,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:37,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:37,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 19:28:37,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:28:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:28:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:28:37,594 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 19:28:37,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305948161] [2020-10-12 19:28:37,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:37,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:28:37,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547057763] [2020-10-12 19:28:37,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:28:37,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:37,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:28:37,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:28:37,600 INFO L87 Difference]: Start difference. First operand 286 states and 375 transitions. Second operand 12 states. [2020-10-12 19:28:38,323 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 155 [2020-10-12 19:28:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:41,381 INFO L93 Difference]: Finished difference Result 957 states and 1354 transitions. [2020-10-12 19:28:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:28:41,381 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-12 19:28:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:41,389 INFO L225 Difference]: With dead ends: 957 [2020-10-12 19:28:41,390 INFO L226 Difference]: Without dead ends: 948 [2020-10-12 19:28:41,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:28:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2020-10-12 19:28:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 284. [2020-10-12 19:28:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-12 19:28:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 371 transitions. [2020-10-12 19:28:41,439 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 371 transitions. Word has length 51 [2020-10-12 19:28:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:41,439 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 371 transitions. [2020-10-12 19:28:41,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:28:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 371 transitions. [2020-10-12 19:28:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 19:28:41,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:41,443 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] [2020-10-12 19:28:41,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:28:41,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:41,445 INFO L82 PathProgramCache]: Analyzing trace with hash -317393183, now seen corresponding path program 1 times [2020-10-12 19:28:41,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:41,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455042477] [2020-10-12 19:28:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:44,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:45,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:46,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:46,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 19:28:46,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:28:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:28:46,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:28:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:28:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:28:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:28:46,850 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:28:46,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:46,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:46,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:46,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:46,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:28:46,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:28:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:28:46,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:28:46,902 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 19:28:46,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455042477] [2020-10-12 19:28:46,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:46,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:28:46,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414523339] [2020-10-12 19:28:46,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:28:46,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:46,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:28:46,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:28:46,905 INFO L87 Difference]: Start difference. First operand 284 states and 371 transitions. Second operand 15 states. [2020-10-12 19:28:47,370 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 153 [2020-10-12 19:28:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:49,434 INFO L93 Difference]: Finished difference Result 612 states and 793 transitions. [2020-10-12 19:28:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:28:49,435 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-12 19:28:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:49,439 INFO L225 Difference]: With dead ends: 612 [2020-10-12 19:28:49,439 INFO L226 Difference]: Without dead ends: 461 [2020-10-12 19:28:49,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:28:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-10-12 19:28:49,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 324. [2020-10-12 19:28:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-12 19:28:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 434 transitions. [2020-10-12 19:28:49,473 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 434 transitions. Word has length 51 [2020-10-12 19:28:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:49,474 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 434 transitions. [2020-10-12 19:28:49,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:28:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 434 transitions. [2020-10-12 19:28:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 19:28:49,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:49,476 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] [2020-10-12 19:28:49,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:28:49,476 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash 67692272, now seen corresponding path program 1 times [2020-10-12 19:28:49,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:49,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056057183] [2020-10-12 19:28:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:50,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:51,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:51,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:52,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:54,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:54,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 19:28:54,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:28:54,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:28:54,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:28:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:28:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:28:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:28:54,970 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:28:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:54,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:55,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:55,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:55,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:55,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:28:55,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:28:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:55,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:28:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:55,032 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 19:28:55,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056057183] [2020-10-12 19:28:55,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:55,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:28:55,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794111016] [2020-10-12 19:28:55,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:28:55,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:55,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:28:55,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:28:55,038 INFO L87 Difference]: Start difference. First operand 324 states and 434 transitions. Second operand 17 states. [2020-10-12 19:28:55,548 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 158 [2020-10-12 19:28:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:58,605 INFO L93 Difference]: Finished difference Result 730 states and 996 transitions. [2020-10-12 19:28:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:28:58,606 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-12 19:28:58,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:58,613 INFO L225 Difference]: With dead ends: 730 [2020-10-12 19:28:58,614 INFO L226 Difference]: Without dead ends: 725 [2020-10-12 19:28:58,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=389, Invalid=1503, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 19:28:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-12 19:28:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 324. [2020-10-12 19:28:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-12 19:28:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 433 transitions. [2020-10-12 19:28:58,652 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 433 transitions. Word has length 52 [2020-10-12 19:28:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:58,653 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 433 transitions. [2020-10-12 19:28:58,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:28:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 433 transitions. [2020-10-12 19:28:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 19:28:58,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:58,655 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] [2020-10-12 19:28:58,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:28:58,655 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:58,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:58,656 INFO L82 PathProgramCache]: Analyzing trace with hash -377020472, now seen corresponding path program 1 times [2020-10-12 19:28:58,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:58,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047646652] [2020-10-12 19:28:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:58,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:02,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:02,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:03,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:03,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 19:29:03,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:29:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:29:03,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:29:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:29:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:29:04,117 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:29:04,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:04,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:04,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:04,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:04,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:29:04,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:04,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:04,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:04,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:04,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:04,173 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 19:29:04,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047646652] [2020-10-12 19:29:04,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:04,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:29:04,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288287991] [2020-10-12 19:29:04,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:29:04,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:04,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:29:04,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:29:04,176 INFO L87 Difference]: Start difference. First operand 324 states and 433 transitions. Second operand 17 states. [2020-10-12 19:29:04,715 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 158 [2020-10-12 19:29:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:06,977 INFO L93 Difference]: Finished difference Result 616 states and 811 transitions. [2020-10-12 19:29:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 19:29:06,977 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-12 19:29:06,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:06,980 INFO L225 Difference]: With dead ends: 616 [2020-10-12 19:29:06,981 INFO L226 Difference]: Without dead ends: 418 [2020-10-12 19:29:06,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:29:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-12 19:29:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 333. [2020-10-12 19:29:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-12 19:29:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 456 transitions. [2020-10-12 19:29:07,027 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 456 transitions. Word has length 52 [2020-10-12 19:29:07,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:07,028 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 456 transitions. [2020-10-12 19:29:07,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:29:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 456 transitions. [2020-10-12 19:29:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 19:29:07,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:07,029 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] [2020-10-12 19:29:07,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:29:07,030 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash 505447072, now seen corresponding path program 1 times [2020-10-12 19:29:07,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:07,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24195480] [2020-10-12 19:29:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:09,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:10,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:10,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:12,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 19:29:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 19:29:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:29:12,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:29:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:29:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:12,638 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:29:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:12,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:12,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:12,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 19:29:12,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:29:12,696 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 19:29:12,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24195480] [2020-10-12 19:29:12,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:12,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:29:12,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063287681] [2020-10-12 19:29:12,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:29:12,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:12,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:29:12,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:29:12,700 INFO L87 Difference]: Start difference. First operand 333 states and 456 transitions. Second operand 17 states. [2020-10-12 19:29:13,287 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2020-10-12 19:29:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:15,782 INFO L93 Difference]: Finished difference Result 419 states and 531 transitions. [2020-10-12 19:29:15,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:29:15,787 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-12 19:29:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:15,789 INFO L225 Difference]: With dead ends: 419 [2020-10-12 19:29:15,790 INFO L226 Difference]: Without dead ends: 406 [2020-10-12 19:29:15,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 19:29:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-12 19:29:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 336. [2020-10-12 19:29:15,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-12 19:29:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 460 transitions. [2020-10-12 19:29:15,827 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 460 transitions. Word has length 52 [2020-10-12 19:29:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:15,827 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 460 transitions. [2020-10-12 19:29:15,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:29:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 460 transitions. [2020-10-12 19:29:15,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:29:15,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:15,829 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] [2020-10-12 19:29:15,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:29:15,829 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:15,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1177387361, now seen corresponding path program 1 times [2020-10-12 19:29:15,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:15,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895979562] [2020-10-12 19:29:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:20,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:20,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:29:20,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:29:20,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:29:20,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:29:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:29:20,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:21,527 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:29:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:29:21,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:21,565 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 19:29:21,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895979562] [2020-10-12 19:29:21,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:21,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:29:21,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983536196] [2020-10-12 19:29:21,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:29:21,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:29:21,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:29:21,568 INFO L87 Difference]: Start difference. First operand 336 states and 460 transitions. Second operand 16 states. [2020-10-12 19:29:21,842 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:29:22,385 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-12 19:29:22,555 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-12 19:29:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:25,328 INFO L93 Difference]: Finished difference Result 681 states and 934 transitions. [2020-10-12 19:29:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:29:25,329 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-12 19:29:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:25,336 INFO L225 Difference]: With dead ends: 681 [2020-10-12 19:29:25,336 INFO L226 Difference]: Without dead ends: 674 [2020-10-12 19:29:25,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=229, Invalid=1103, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 19:29:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-10-12 19:29:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 336. [2020-10-12 19:29:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-12 19:29:25,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 459 transitions. [2020-10-12 19:29:25,409 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 459 transitions. Word has length 53 [2020-10-12 19:29:25,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:25,409 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 459 transitions. [2020-10-12 19:29:25,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:29:25,410 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 459 transitions. [2020-10-12 19:29:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:29:25,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:25,413 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] [2020-10-12 19:29:25,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:29:25,414 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:25,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:25,414 INFO L82 PathProgramCache]: Analyzing trace with hash 791284277, now seen corresponding path program 1 times [2020-10-12 19:29:25,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:25,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684809736] [2020-10-12 19:29:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:26,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:26,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:26,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:29:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:29:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:29:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:29:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:29:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:30,750 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:29:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:30,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:30,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:30,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:30,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:30,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:29:30,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:30,806 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 19:29:30,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684809736] [2020-10-12 19:29:30,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:30,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:29:30,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685151965] [2020-10-12 19:29:30,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:29:30,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:30,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:29:30,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:29:30,813 INFO L87 Difference]: Start difference. First operand 336 states and 459 transitions. Second operand 13 states. [2020-10-12 19:29:31,050 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:29:32,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:32,690 INFO L93 Difference]: Finished difference Result 924 states and 1325 transitions. [2020-10-12 19:29:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:29:32,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-12 19:29:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:32,696 INFO L225 Difference]: With dead ends: 924 [2020-10-12 19:29:32,697 INFO L226 Difference]: Without dead ends: 736 [2020-10-12 19:29:32,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:29:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-10-12 19:29:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 387. [2020-10-12 19:29:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-12 19:29:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 533 transitions. [2020-10-12 19:29:32,755 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 533 transitions. Word has length 53 [2020-10-12 19:29:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:32,756 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 533 transitions. [2020-10-12 19:29:32,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:29:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 533 transitions. [2020-10-12 19:29:32,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:29:32,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:32,758 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] [2020-10-12 19:29:32,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:29:32,758 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1306538019, now seen corresponding path program 1 times [2020-10-12 19:29:32,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:32,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382777497] [2020-10-12 19:29:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:32,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:33,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:37,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:37,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:29:37,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:29:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:29:37,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:29:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:29:37,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:38,154 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2020-10-12 19:29:38,454 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:29:38,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:38,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:38,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:29:38,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:38,484 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 19:29:38,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382777497] [2020-10-12 19:29:38,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:38,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:29:38,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817392684] [2020-10-12 19:29:38,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:29:38,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:38,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:29:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:29:38,486 INFO L87 Difference]: Start difference. First operand 387 states and 533 transitions. Second operand 16 states. [2020-10-12 19:29:38,790 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:29:39,300 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-12 19:29:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:40,868 INFO L93 Difference]: Finished difference Result 441 states and 577 transitions. [2020-10-12 19:29:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 19:29:40,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-12 19:29:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:40,871 INFO L225 Difference]: With dead ends: 441 [2020-10-12 19:29:40,871 INFO L226 Difference]: Without dead ends: 434 [2020-10-12 19:29:40,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 19:29:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-12 19:29:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 387. [2020-10-12 19:29:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-12 19:29:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 532 transitions. [2020-10-12 19:29:40,920 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 532 transitions. Word has length 53 [2020-10-12 19:29:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:40,921 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 532 transitions. [2020-10-12 19:29:40,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:29:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 532 transitions. [2020-10-12 19:29:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:29:40,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:40,922 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] [2020-10-12 19:29:40,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:29:40,922 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:40,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1135182917, now seen corresponding path program 1 times [2020-10-12 19:29:40,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:40,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750067533] [2020-10-12 19:29:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:40,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:42,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:44,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:44,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:29:44,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:29:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3648 [2020-10-12 19:29:44,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:29:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:29:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:29:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:44,998 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:29:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:45,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:45,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:45,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:29:45,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:45,019 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 19:29:45,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750067533] [2020-10-12 19:29:45,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:45,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:29:45,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075370789] [2020-10-12 19:29:45,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:29:45,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:45,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:29:45,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:29:45,021 INFO L87 Difference]: Start difference. First operand 387 states and 532 transitions. Second operand 15 states. [2020-10-12 19:29:45,207 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 19:29:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:46,545 INFO L93 Difference]: Finished difference Result 434 states and 578 transitions. [2020-10-12 19:29:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:29:46,551 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-12 19:29:46,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:46,554 INFO L225 Difference]: With dead ends: 434 [2020-10-12 19:29:46,554 INFO L226 Difference]: Without dead ends: 430 [2020-10-12 19:29:46,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:29:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-12 19:29:46,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 397. [2020-10-12 19:29:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-12 19:29:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 547 transitions. [2020-10-12 19:29:46,608 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 547 transitions. Word has length 54 [2020-10-12 19:29:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:46,608 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 547 transitions. [2020-10-12 19:29:46,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:29:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 547 transitions. [2020-10-12 19:29:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:29:46,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:46,610 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] [2020-10-12 19:29:46,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:29:46,610 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:46,611 INFO L82 PathProgramCache]: Analyzing trace with hash -649279837, now seen corresponding path program 1 times [2020-10-12 19:29:46,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:46,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863082709] [2020-10-12 19:29:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:46,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:46,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:48,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:29:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:29:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1870 [2020-10-12 19:29:48,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:29:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 19:29:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:29:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:49,030 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:29:49,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:49,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:49,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:49,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:29:49,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:49,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:49,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:49,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:29:49,079 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 19:29:49,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863082709] [2020-10-12 19:29:49,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:49,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:29:49,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554846471] [2020-10-12 19:29:49,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:29:49,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:29:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:29:49,083 INFO L87 Difference]: Start difference. First operand 397 states and 547 transitions. Second operand 15 states. [2020-10-12 19:29:49,316 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 19:29:49,687 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-12 19:29:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:50,876 INFO L93 Difference]: Finished difference Result 620 states and 854 transitions. [2020-10-12 19:29:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:29:50,877 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-12 19:29:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:50,879 INFO L225 Difference]: With dead ends: 620 [2020-10-12 19:29:50,880 INFO L226 Difference]: Without dead ends: 532 [2020-10-12 19:29:50,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:29:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-12 19:29:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 393. [2020-10-12 19:29:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-12 19:29:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 540 transitions. [2020-10-12 19:29:50,937 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 540 transitions. Word has length 54 [2020-10-12 19:29:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:50,937 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 540 transitions. [2020-10-12 19:29:50,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:29:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 540 transitions. [2020-10-12 19:29:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:29:50,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:50,939 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] [2020-10-12 19:29:50,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:29:50,939 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:50,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1574640523, now seen corresponding path program 1 times [2020-10-12 19:29:50,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:50,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458673778] [2020-10-12 19:29:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:50,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:52,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:52,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:29:52,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:29:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1886 [2020-10-12 19:29:52,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:29:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:29:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:53,170 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-12 19:29:53,767 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:29:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:53,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:53,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:53,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:29:53,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:29:53,825 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 19:29:53,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458673778] [2020-10-12 19:29:53,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:53,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:29:53,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434541630] [2020-10-12 19:29:53,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:29:53,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:53,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:29:53,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:29:53,829 INFO L87 Difference]: Start difference. First operand 393 states and 540 transitions. Second operand 15 states. [2020-10-12 19:29:54,024 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-12 19:29:54,639 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 190 [2020-10-12 19:29:55,105 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-12 19:29:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:57,098 INFO L93 Difference]: Finished difference Result 644 states and 899 transitions. [2020-10-12 19:29:57,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:29:57,099 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-12 19:29:57,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:57,103 INFO L225 Difference]: With dead ends: 644 [2020-10-12 19:29:57,103 INFO L226 Difference]: Without dead ends: 638 [2020-10-12 19:29:57,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:29:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-12 19:29:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 393. [2020-10-12 19:29:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-12 19:29:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 539 transitions. [2020-10-12 19:29:57,154 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 539 transitions. Word has length 54 [2020-10-12 19:29:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:57,155 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 539 transitions. [2020-10-12 19:29:57,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:29:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 539 transitions. [2020-10-12 19:29:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:29:57,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:57,156 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] [2020-10-12 19:29:57,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:29:57,156 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:57,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1611086839, now seen corresponding path program 1 times [2020-10-12 19:29:57,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:57,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224963168] [2020-10-12 19:29:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:01,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:01,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:01,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:02,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:02,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:30:02,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:30:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:30:02,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:30:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:02,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:30:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:02,519 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-10-12 19:30:02,870 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:02,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:02,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:02,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:02,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:30:02,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:02,916 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 19:30:02,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224963168] [2020-10-12 19:30:02,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:02,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:30:02,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5217005] [2020-10-12 19:30:02,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:30:02,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:02,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:30:02,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:30:02,918 INFO L87 Difference]: Start difference. First operand 393 states and 539 transitions. Second operand 16 states. [2020-10-12 19:30:03,126 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 19:30:03,478 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-12 19:30:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:04,854 INFO L93 Difference]: Finished difference Result 736 states and 1042 transitions. [2020-10-12 19:30:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:30:04,856 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-12 19:30:04,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:04,858 INFO L225 Difference]: With dead ends: 736 [2020-10-12 19:30:04,858 INFO L226 Difference]: Without dead ends: 518 [2020-10-12 19:30:04,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:30:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-12 19:30:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 382. [2020-10-12 19:30:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-12 19:30:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 527 transitions. [2020-10-12 19:30:04,928 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 527 transitions. Word has length 54 [2020-10-12 19:30:04,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:04,928 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 527 transitions. [2020-10-12 19:30:04,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:30:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 527 transitions. [2020-10-12 19:30:04,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:30:04,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:04,930 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] [2020-10-12 19:30:04,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:30:04,930 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:04,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:04,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1471362170, now seen corresponding path program 1 times [2020-10-12 19:30:04,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:04,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297766280] [2020-10-12 19:30:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:06,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:06,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:30:06,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:30:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-10-12 19:30:06,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:06,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:30:06,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:30:06,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:30:06,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:06,519 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:06,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:06,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:06,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:06,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:30:06,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:06,539 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 19:30:06,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297766280] [2020-10-12 19:30:06,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:06,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:30:06,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349212373] [2020-10-12 19:30:06,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:30:06,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:06,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:30:06,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:30:06,541 INFO L87 Difference]: Start difference. First operand 382 states and 527 transitions. Second operand 11 states. [2020-10-12 19:30:06,763 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 19:30:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:08,195 INFO L93 Difference]: Finished difference Result 752 states and 1064 transitions. [2020-10-12 19:30:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:30:08,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-12 19:30:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:08,199 INFO L225 Difference]: With dead ends: 752 [2020-10-12 19:30:08,199 INFO L226 Difference]: Without dead ends: 650 [2020-10-12 19:30:08,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:30:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-12 19:30:08,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 382. [2020-10-12 19:30:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-12 19:30:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 526 transitions. [2020-10-12 19:30:08,265 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 526 transitions. Word has length 55 [2020-10-12 19:30:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:08,265 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 526 transitions. [2020-10-12 19:30:08,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:30:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 526 transitions. [2020-10-12 19:30:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:30:08,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:08,266 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] [2020-10-12 19:30:08,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:30:08,267 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:08,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:08,267 INFO L82 PathProgramCache]: Analyzing trace with hash -626460126, now seen corresponding path program 1 times [2020-10-12 19:30:08,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:08,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465652462] [2020-10-12 19:30:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:08,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:10,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:13,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:13,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:30:13,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:30:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:30:13,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:30:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:30:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:13,661 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:13,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:13,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:13,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:13,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:13,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:30:13,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:13,715 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 19:30:13,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465652462] [2020-10-12 19:30:13,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:13,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:30:13,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397480439] [2020-10-12 19:30:13,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:30:13,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:13,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:30:13,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:30:13,717 INFO L87 Difference]: Start difference. First operand 382 states and 526 transitions. Second operand 15 states. [2020-10-12 19:30:14,244 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 155 [2020-10-12 19:30:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:16,422 INFO L93 Difference]: Finished difference Result 501 states and 666 transitions. [2020-10-12 19:30:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:30:16,423 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-12 19:30:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:16,425 INFO L225 Difference]: With dead ends: 501 [2020-10-12 19:30:16,425 INFO L226 Difference]: Without dead ends: 494 [2020-10-12 19:30:16,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=360, Invalid=1280, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 19:30:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-12 19:30:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 382. [2020-10-12 19:30:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-12 19:30:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 525 transitions. [2020-10-12 19:30:16,483 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 525 transitions. Word has length 55 [2020-10-12 19:30:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:16,483 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 525 transitions. [2020-10-12 19:30:16,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:30:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 525 transitions. [2020-10-12 19:30:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:30:16,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:16,484 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] [2020-10-12 19:30:16,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:30:16,485 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:16,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1123096555, now seen corresponding path program 1 times [2020-10-12 19:30:16,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:16,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072844981] [2020-10-12 19:30:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:17,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:18,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:18,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:19,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:19,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:30:19,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:30:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2706 [2020-10-12 19:30:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:30:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:30:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:20,097 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:20,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:20,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:20,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:20,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:30:20,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:20,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:20,122 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 19:30:20,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072844981] [2020-10-12 19:30:20,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:20,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:30:20,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356102942] [2020-10-12 19:30:20,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:30:20,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:20,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:30:20,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:30:20,124 INFO L87 Difference]: Start difference. First operand 382 states and 525 transitions. Second operand 16 states. [2020-10-12 19:30:20,562 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-12 19:30:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:22,368 INFO L93 Difference]: Finished difference Result 435 states and 571 transitions. [2020-10-12 19:30:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:30:22,369 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-12 19:30:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:22,372 INFO L225 Difference]: With dead ends: 435 [2020-10-12 19:30:22,372 INFO L226 Difference]: Without dead ends: 422 [2020-10-12 19:30:22,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:30:22,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-12 19:30:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 376. [2020-10-12 19:30:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-12 19:30:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 518 transitions. [2020-10-12 19:30:22,427 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 518 transitions. Word has length 55 [2020-10-12 19:30:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:22,428 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 518 transitions. [2020-10-12 19:30:22,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:30:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 518 transitions. [2020-10-12 19:30:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:30:22,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:22,429 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] [2020-10-12 19:30:22,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:30:22,429 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:22,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1027493084, now seen corresponding path program 1 times [2020-10-12 19:30:22,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:22,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768880641] [2020-10-12 19:30:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:30:23,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:30:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-10-12 19:30:23,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:30:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 19:30:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:30:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:24,285 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:24,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:24,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:24,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:30:24,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:24,308 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 19:30:24,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768880641] [2020-10-12 19:30:24,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:24,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:30:24,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992818785] [2020-10-12 19:30:24,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:30:24,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:24,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:30:24,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:30:24,310 INFO L87 Difference]: Start difference. First operand 376 states and 518 transitions. Second operand 12 states. [2020-10-12 19:30:24,765 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 152 [2020-10-12 19:30:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:26,721 INFO L93 Difference]: Finished difference Result 829 states and 1181 transitions. [2020-10-12 19:30:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 19:30:26,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-12 19:30:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:26,726 INFO L225 Difference]: With dead ends: 829 [2020-10-12 19:30:26,726 INFO L226 Difference]: Without dead ends: 822 [2020-10-12 19:30:26,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:30:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-12 19:30:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 373. [2020-10-12 19:30:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-12 19:30:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 514 transitions. [2020-10-12 19:30:26,795 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 514 transitions. Word has length 55 [2020-10-12 19:30:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:26,795 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 514 transitions. [2020-10-12 19:30:26,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:30:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 514 transitions. [2020-10-12 19:30:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:30:26,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:26,796 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] [2020-10-12 19:30:26,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:30:26,797 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:26,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1522843883, now seen corresponding path program 1 times [2020-10-12 19:30:26,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:26,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277099797] [2020-10-12 19:30:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:27,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:30,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:30,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:30:30,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:30:30,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3227 [2020-10-12 19:30:30,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:30:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:30:30,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:30,755 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:30,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:30,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:30,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:30,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:30:30,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:30,786 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 19:30:30,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277099797] [2020-10-12 19:30:30,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:30,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:30:30,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015408144] [2020-10-12 19:30:30,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:30:30,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:30,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:30:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:30:30,789 INFO L87 Difference]: Start difference. First operand 373 states and 514 transitions. Second operand 16 states. [2020-10-12 19:30:31,059 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-10-12 19:30:31,830 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 210 [2020-10-12 19:30:32,299 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-12 19:30:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:34,028 INFO L93 Difference]: Finished difference Result 616 states and 869 transitions. [2020-10-12 19:30:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:30:34,029 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-12 19:30:34,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:34,032 INFO L225 Difference]: With dead ends: 616 [2020-10-12 19:30:34,032 INFO L226 Difference]: Without dead ends: 405 [2020-10-12 19:30:34,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:30:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-12 19:30:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 367. [2020-10-12 19:30:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-12 19:30:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 506 transitions. [2020-10-12 19:30:34,144 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 506 transitions. Word has length 55 [2020-10-12 19:30:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:34,145 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 506 transitions. [2020-10-12 19:30:34,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:30:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 506 transitions. [2020-10-12 19:30:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:30:34,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:34,147 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] [2020-10-12 19:30:34,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:30:34,147 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:34,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1760717498, now seen corresponding path program 1 times [2020-10-12 19:30:34,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:34,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315224420] [2020-10-12 19:30:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:30:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:30:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4354 [2020-10-12 19:30:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:30:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:30:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:38,956 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:38,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:38,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:30:38,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:38,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:38,984 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 19:30:38,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315224420] [2020-10-12 19:30:38,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:38,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:30:38,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417565326] [2020-10-12 19:30:38,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:30:38,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:38,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:30:38,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:30:38,986 INFO L87 Difference]: Start difference. First operand 367 states and 506 transitions. Second operand 15 states. [2020-10-12 19:30:39,561 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 162 [2020-10-12 19:30:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:41,337 INFO L93 Difference]: Finished difference Result 543 states and 750 transitions. [2020-10-12 19:30:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:30:41,338 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-12 19:30:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:41,341 INFO L225 Difference]: With dead ends: 543 [2020-10-12 19:30:41,341 INFO L226 Difference]: Without dead ends: 451 [2020-10-12 19:30:41,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:30:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-12 19:30:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 418. [2020-10-12 19:30:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-12 19:30:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 580 transitions. [2020-10-12 19:30:41,407 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 580 transitions. Word has length 55 [2020-10-12 19:30:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:41,407 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 580 transitions. [2020-10-12 19:30:41,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:30:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 580 transitions. [2020-10-12 19:30:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:30:41,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:41,408 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] [2020-10-12 19:30:41,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 19:30:41,408 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:41,409 INFO L82 PathProgramCache]: Analyzing trace with hash 140367608, now seen corresponding path program 1 times [2020-10-12 19:30:41,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:41,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361723323] [2020-10-12 19:30:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:42,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:42,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:30:42,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:30:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-10-12 19:30:42,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:30:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 19:30:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:30:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:43,116 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:43,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:43,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:43,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:30:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:43,133 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 19:30:43,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361723323] [2020-10-12 19:30:43,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:43,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:30:43,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396001088] [2020-10-12 19:30:43,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:30:43,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:43,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:30:43,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:30:43,135 INFO L87 Difference]: Start difference. First operand 418 states and 580 transitions. Second operand 11 states. [2020-10-12 19:30:43,354 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:30:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:44,308 INFO L93 Difference]: Finished difference Result 593 states and 822 transitions. [2020-10-12 19:30:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:30:44,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-12 19:30:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:44,311 INFO L225 Difference]: With dead ends: 593 [2020-10-12 19:30:44,311 INFO L226 Difference]: Without dead ends: 582 [2020-10-12 19:30:44,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:30:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-12 19:30:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 416. [2020-10-12 19:30:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-12 19:30:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 577 transitions. [2020-10-12 19:30:44,366 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 577 transitions. Word has length 55 [2020-10-12 19:30:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:44,366 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 577 transitions. [2020-10-12 19:30:44,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:30:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 577 transitions. [2020-10-12 19:30:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:30:44,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:44,367 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] [2020-10-12 19:30:44,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 19:30:44,367 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1536418230, now seen corresponding path program 1 times [2020-10-12 19:30:44,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:44,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353531763] [2020-10-12 19:30:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:44,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:45,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:45,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:30:45,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:30:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-10-12 19:30:45,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:30:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:30:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:45,878 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:45,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:45,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:30:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:45,912 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 19:30:45,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353531763] [2020-10-12 19:30:45,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:45,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:30:45,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607743052] [2020-10-12 19:30:45,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:30:45,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:45,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:30:45,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:30:45,914 INFO L87 Difference]: Start difference. First operand 416 states and 577 transitions. Second operand 17 states. [2020-10-12 19:30:46,526 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 158 [2020-10-12 19:30:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:49,709 INFO L93 Difference]: Finished difference Result 742 states and 1042 transitions. [2020-10-12 19:30:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:30:49,709 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-12 19:30:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:49,712 INFO L225 Difference]: With dead ends: 742 [2020-10-12 19:30:49,712 INFO L226 Difference]: Without dead ends: 644 [2020-10-12 19:30:49,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=318, Invalid=1322, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 19:30:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-10-12 19:30:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 420. [2020-10-12 19:30:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-12 19:30:49,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 582 transitions. [2020-10-12 19:30:49,795 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 582 transitions. Word has length 56 [2020-10-12 19:30:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:49,795 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 582 transitions. [2020-10-12 19:30:49,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:30:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 582 transitions. [2020-10-12 19:30:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:30:49,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:49,796 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] [2020-10-12 19:30:49,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 19:30:49,797 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash 660726770, now seen corresponding path program 1 times [2020-10-12 19:30:49,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:49,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552857364] [2020-10-12 19:30:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:54,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:54,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:30:54,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:30:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4332 [2020-10-12 19:30:54,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:30:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:30:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:54,562 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:54,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:54,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:54,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:54,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:30:54,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:54,595 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 19:30:54,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552857364] [2020-10-12 19:30:54,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:54,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:30:54,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492784540] [2020-10-12 19:30:54,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:30:54,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:30:54,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:30:54,597 INFO L87 Difference]: Start difference. First operand 420 states and 582 transitions. Second operand 17 states. [2020-10-12 19:30:55,203 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-10-12 19:30:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:57,561 INFO L93 Difference]: Finished difference Result 463 states and 620 transitions. [2020-10-12 19:30:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:30:57,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-12 19:30:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:57,567 INFO L225 Difference]: With dead ends: 463 [2020-10-12 19:30:57,567 INFO L226 Difference]: Without dead ends: 456 [2020-10-12 19:30:57,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=343, Invalid=1139, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:30:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-10-12 19:30:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 420. [2020-10-12 19:30:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-12 19:30:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 581 transitions. [2020-10-12 19:30:57,649 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 581 transitions. Word has length 56 [2020-10-12 19:30:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:57,650 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 581 transitions. [2020-10-12 19:30:57,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:30:57,650 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 581 transitions. [2020-10-12 19:30:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:30:57,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:57,651 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] [2020-10-12 19:30:57,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 19:30:57,651 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:57,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:57,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1883832796, now seen corresponding path program 1 times [2020-10-12 19:30:57,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:57,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893108437] [2020-10-12 19:30:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:57,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:58,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:59,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:59,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:30:59,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:30:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1629 [2020-10-12 19:30:59,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:30:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:30:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:59,750 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:30:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:59,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:59,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:59,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:30:59,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:59,799 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 19:30:59,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893108437] [2020-10-12 19:30:59,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:59,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:30:59,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727772859] [2020-10-12 19:30:59,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:30:59,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:59,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:30:59,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:30:59,800 INFO L87 Difference]: Start difference. First operand 420 states and 581 transitions. Second operand 17 states. [2020-10-12 19:30:59,928 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-12 19:31:00,505 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2020-10-12 19:31:01,131 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-12 19:31:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:03,363 INFO L93 Difference]: Finished difference Result 460 states and 616 transitions. [2020-10-12 19:31:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 19:31:03,364 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-12 19:31:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:03,367 INFO L225 Difference]: With dead ends: 460 [2020-10-12 19:31:03,367 INFO L226 Difference]: Without dead ends: 453 [2020-10-12 19:31:03,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 19:31:03,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-12 19:31:03,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 416. [2020-10-12 19:31:03,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-12 19:31:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 576 transitions. [2020-10-12 19:31:03,449 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 576 transitions. Word has length 56 [2020-10-12 19:31:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:03,449 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 576 transitions. [2020-10-12 19:31:03,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:31:03,449 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 576 transitions. [2020-10-12 19:31:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:31:03,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:03,451 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] [2020-10-12 19:31:03,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 19:31:03,451 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1370606669, now seen corresponding path program 1 times [2020-10-12 19:31:03,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:03,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950466284] [2020-10-12 19:31:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:04,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:05,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:08,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:08,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:31:08,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:31:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:31:08,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:31:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:31:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:31:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:08,929 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:08,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:08,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:08,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:08,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:08,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:31:08,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:31:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:31:08,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:08,964 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 19:31:08,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950466284] [2020-10-12 19:31:08,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:08,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:31:08,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419590088] [2020-10-12 19:31:08,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:31:08,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:08,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:31:08,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:31:08,966 INFO L87 Difference]: Start difference. First operand 416 states and 576 transitions. Second operand 17 states. [2020-10-12 19:31:09,107 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-12 19:31:09,637 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 171 [2020-10-12 19:31:10,050 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-12 19:31:11,567 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-12 19:31:11,706 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-12 19:31:11,844 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-12 19:31:12,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:12,385 INFO L93 Difference]: Finished difference Result 469 states and 623 transitions. [2020-10-12 19:31:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 19:31:12,386 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-12 19:31:12,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:12,389 INFO L225 Difference]: With dead ends: 469 [2020-10-12 19:31:12,389 INFO L226 Difference]: Without dead ends: 456 [2020-10-12 19:31:12,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:31:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-10-12 19:31:12,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 412. [2020-10-12 19:31:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-12 19:31:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 571 transitions. [2020-10-12 19:31:12,445 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 571 transitions. Word has length 56 [2020-10-12 19:31:12,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:12,446 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 571 transitions. [2020-10-12 19:31:12,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:31:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 571 transitions. [2020-10-12 19:31:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:31:12,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:12,446 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] [2020-10-12 19:31:12,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 19:31:12,447 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:12,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:12,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1758486379, now seen corresponding path program 1 times [2020-10-12 19:31:12,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:12,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455004526] [2020-10-12 19:31:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:13,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:13,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:31:13,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:31:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-12 19:31:13,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:31:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:31:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:31:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:13,582 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:13,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:13,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:13,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:31:13,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:13,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:13,606 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 19:31:13,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455004526] [2020-10-12 19:31:13,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:13,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:31:13,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810366739] [2020-10-12 19:31:13,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:31:13,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:13,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:31:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:31:13,608 INFO L87 Difference]: Start difference. First operand 412 states and 571 transitions. Second operand 16 states. [2020-10-12 19:31:13,749 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 19:31:14,282 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-12 19:31:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:16,220 INFO L93 Difference]: Finished difference Result 637 states and 887 transitions. [2020-10-12 19:31:16,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:31:16,221 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-12 19:31:16,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:16,224 INFO L225 Difference]: With dead ends: 637 [2020-10-12 19:31:16,224 INFO L226 Difference]: Without dead ends: 631 [2020-10-12 19:31:16,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:31:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-12 19:31:16,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 418. [2020-10-12 19:31:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-12 19:31:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 579 transitions. [2020-10-12 19:31:16,343 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 579 transitions. Word has length 57 [2020-10-12 19:31:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:16,343 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 579 transitions. [2020-10-12 19:31:16,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:31:16,343 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 579 transitions. [2020-10-12 19:31:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:31:16,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:16,345 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] [2020-10-12 19:31:16,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 19:31:16,345 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:16,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:16,346 INFO L82 PathProgramCache]: Analyzing trace with hash 860193789, now seen corresponding path program 1 times [2020-10-12 19:31:16,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:16,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594899512] [2020-10-12 19:31:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:16,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:31:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:31:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 911 [2020-10-12 19:31:17,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:31:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:31:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 19:31:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:17,756 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:17,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:17,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:17,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:31:17,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:17,779 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 19:31:17,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594899512] [2020-10-12 19:31:17,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:17,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:31:17,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554685799] [2020-10-12 19:31:17,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:31:17,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:17,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:31:17,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:31:17,781 INFO L87 Difference]: Start difference. First operand 418 states and 579 transitions. Second operand 16 states. [2020-10-12 19:31:18,404 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 164 [2020-10-12 19:31:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:20,111 INFO L93 Difference]: Finished difference Result 464 states and 619 transitions. [2020-10-12 19:31:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:31:20,112 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-12 19:31:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:20,115 INFO L225 Difference]: With dead ends: 464 [2020-10-12 19:31:20,115 INFO L226 Difference]: Without dead ends: 456 [2020-10-12 19:31:20,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:31:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-10-12 19:31:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 418. [2020-10-12 19:31:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-12 19:31:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 578 transitions. [2020-10-12 19:31:20,174 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 578 transitions. Word has length 57 [2020-10-12 19:31:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:20,175 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 578 transitions. [2020-10-12 19:31:20,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:31:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 578 transitions. [2020-10-12 19:31:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:31:20,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:20,176 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] [2020-10-12 19:31:20,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 19:31:20,176 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:20,177 INFO L82 PathProgramCache]: Analyzing trace with hash -219770369, now seen corresponding path program 1 times [2020-10-12 19:31:20,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:20,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599618999] [2020-10-12 19:31:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:20,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:20,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:20,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:31:20,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:31:20,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-10-12 19:31:20,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:20,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:31:20,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:31:20,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:31:20,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:21,417 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:21,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:21,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:21,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:21,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:21,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:31:21,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:21,441 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 19:31:21,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599618999] [2020-10-12 19:31:21,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:21,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:31:21,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939658003] [2020-10-12 19:31:21,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:31:21,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:21,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:31:21,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:31:21,442 INFO L87 Difference]: Start difference. First operand 418 states and 578 transitions. Second operand 16 states. [2020-10-12 19:31:22,077 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2020-10-12 19:31:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:23,645 INFO L93 Difference]: Finished difference Result 454 states and 609 transitions. [2020-10-12 19:31:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:31:23,646 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-12 19:31:23,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:23,648 INFO L225 Difference]: With dead ends: 454 [2020-10-12 19:31:23,648 INFO L226 Difference]: Without dead ends: 446 [2020-10-12 19:31:23,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:31:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-12 19:31:23,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 423. [2020-10-12 19:31:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-12 19:31:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 583 transitions. [2020-10-12 19:31:23,719 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 583 transitions. Word has length 57 [2020-10-12 19:31:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:23,720 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 583 transitions. [2020-10-12 19:31:23,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:31:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 583 transitions. [2020-10-12 19:31:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:31:23,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:23,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:31:23,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 19:31:23,721 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash -30872256, now seen corresponding path program 1 times [2020-10-12 19:31:23,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:23,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155575046] [2020-10-12 19:31:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:24,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:24,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:31:24,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 19:31:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-12 19:31:24,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:31:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:31:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:31:24,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:24,312 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:31:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:24,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155575046] [2020-10-12 19:31:24,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:24,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:31:24,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536723097] [2020-10-12 19:31:24,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:31:24,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:24,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:31:24,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:31:24,339 INFO L87 Difference]: Start difference. First operand 423 states and 583 transitions. Second operand 11 states. [2020-10-12 19:31:24,520 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:31:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:25,703 INFO L93 Difference]: Finished difference Result 707 states and 1005 transitions. [2020-10-12 19:31:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:31:25,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-12 19:31:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:25,707 INFO L225 Difference]: With dead ends: 707 [2020-10-12 19:31:25,708 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 19:31:25,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:31:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 19:31:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 419. [2020-10-12 19:31:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-12 19:31:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 578 transitions. [2020-10-12 19:31:25,784 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 578 transitions. Word has length 58 [2020-10-12 19:31:25,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:25,784 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 578 transitions. [2020-10-12 19:31:25,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:31:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 578 transitions. [2020-10-12 19:31:25,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:31:25,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:25,786 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] [2020-10-12 19:31:25,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 19:31:25,786 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:25,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:25,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1885946176, now seen corresponding path program 1 times [2020-10-12 19:31:25,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:25,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617577036] [2020-10-12 19:31:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:25,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:26,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:26,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:31:26,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 19:31:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:31:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:31:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:26,223 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:26,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:26,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:26,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:31:26,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:26,245 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 19:31:26,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617577036] [2020-10-12 19:31:26,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:26,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:31:26,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276600574] [2020-10-12 19:31:26,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:31:26,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:26,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:31:26,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:31:26,246 INFO L87 Difference]: Start difference. First operand 419 states and 578 transitions. Second operand 9 states. [2020-10-12 19:31:26,435 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:31:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:27,297 INFO L93 Difference]: Finished difference Result 430 states and 587 transitions. [2020-10-12 19:31:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 19:31:27,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-12 19:31:27,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:27,301 INFO L225 Difference]: With dead ends: 430 [2020-10-12 19:31:27,301 INFO L226 Difference]: Without dead ends: 424 [2020-10-12 19:31:27,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:31:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-12 19:31:27,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 407. [2020-10-12 19:31:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-12 19:31:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 563 transitions. [2020-10-12 19:31:27,360 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 563 transitions. Word has length 58 [2020-10-12 19:31:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:27,361 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 563 transitions. [2020-10-12 19:31:27,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:31:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 563 transitions. [2020-10-12 19:31:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:31:27,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:27,362 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] [2020-10-12 19:31:27,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 19:31:27,362 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:27,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:27,362 INFO L82 PathProgramCache]: Analyzing trace with hash 896219597, now seen corresponding path program 1 times [2020-10-12 19:31:27,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:27,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599788046] [2020-10-12 19:31:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:27,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:27,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:31:27,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 19:31:27,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:31:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 19:31:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:27,822 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:27,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:27,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:27,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:31:27,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:27,844 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 19:31:27,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599788046] [2020-10-12 19:31:27,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:27,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:31:27,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119015496] [2020-10-12 19:31:27,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:31:27,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:27,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:31:27,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:31:27,845 INFO L87 Difference]: Start difference. First operand 407 states and 563 transitions. Second operand 9 states. [2020-10-12 19:31:28,040 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:31:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:28,756 INFO L93 Difference]: Finished difference Result 409 states and 564 transitions. [2020-10-12 19:31:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 19:31:28,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-12 19:31:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:28,759 INFO L225 Difference]: With dead ends: 409 [2020-10-12 19:31:28,759 INFO L226 Difference]: Without dead ends: 398 [2020-10-12 19:31:28,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:31:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-12 19:31:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2020-10-12 19:31:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-12 19:31:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 549 transitions. [2020-10-12 19:31:28,826 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 549 transitions. Word has length 58 [2020-10-12 19:31:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:28,826 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 549 transitions. [2020-10-12 19:31:28,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:31:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 549 transitions. [2020-10-12 19:31:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:31:28,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:28,827 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] [2020-10-12 19:31:28,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 19:31:28,827 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:28,827 INFO L82 PathProgramCache]: Analyzing trace with hash 105024936, now seen corresponding path program 1 times [2020-10-12 19:31:28,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:28,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595146769] [2020-10-12 19:31:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:28,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:31:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 19:31:28,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:31:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 19:31:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:29,171 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:29,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:29,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:29,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:29,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:31:29,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:29,190 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 19:31:29,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595146769] [2020-10-12 19:31:29,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:29,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:31:29,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315508632] [2020-10-12 19:31:29,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:31:29,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:31:29,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:31:29,191 INFO L87 Difference]: Start difference. First operand 394 states and 549 transitions. Second operand 8 states. [2020-10-12 19:31:29,375 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:31:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:30,004 INFO L93 Difference]: Finished difference Result 492 states and 695 transitions. [2020-10-12 19:31:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 19:31:30,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-12 19:31:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:30,008 INFO L225 Difference]: With dead ends: 492 [2020-10-12 19:31:30,008 INFO L226 Difference]: Without dead ends: 469 [2020-10-12 19:31:30,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:31:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-12 19:31:30,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 371. [2020-10-12 19:31:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-12 19:31:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 524 transitions. [2020-10-12 19:31:30,071 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 524 transitions. Word has length 58 [2020-10-12 19:31:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:30,072 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 524 transitions. [2020-10-12 19:31:30,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:31:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 524 transitions. [2020-10-12 19:31:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 19:31:30,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:30,073 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] [2020-10-12 19:31:30,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 19:31:30,074 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:30,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1698083765, now seen corresponding path program 1 times [2020-10-12 19:31:30,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:30,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688902779] [2020-10-12 19:31:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:30,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:30,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:34,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 19:31:35,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:31:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:31:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:31:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:31:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:35,638 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:35,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:35,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:35,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:35,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:35,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:31:35,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:35,665 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 19:31:35,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688902779] [2020-10-12 19:31:35,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:35,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:31:35,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495830663] [2020-10-12 19:31:35,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:31:35,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:35,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:31:35,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:31:35,667 INFO L87 Difference]: Start difference. First operand 371 states and 524 transitions. Second operand 13 states. [2020-10-12 19:31:35,954 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:31:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:37,752 INFO L93 Difference]: Finished difference Result 902 states and 1337 transitions. [2020-10-12 19:31:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:31:37,753 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-12 19:31:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:37,756 INFO L225 Difference]: With dead ends: 902 [2020-10-12 19:31:37,756 INFO L226 Difference]: Without dead ends: 642 [2020-10-12 19:31:37,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:31:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-12 19:31:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 374. [2020-10-12 19:31:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-12 19:31:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 526 transitions. [2020-10-12 19:31:37,817 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 526 transitions. Word has length 71 [2020-10-12 19:31:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:37,818 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 526 transitions. [2020-10-12 19:31:37,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:31:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 526 transitions. [2020-10-12 19:31:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 19:31:37,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:37,819 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] [2020-10-12 19:31:37,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 19:31:37,819 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash -203381734, now seen corresponding path program 1 times [2020-10-12 19:31:37,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:37,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883241392] [2020-10-12 19:31:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:37,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:38,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:42,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:42,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 19:31:42,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:31:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:31:42,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:31:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:31:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:43,248 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:43,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:43,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:43,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:43,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:31:43,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:43,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:43,271 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 19:31:43,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883241392] [2020-10-12 19:31:43,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:43,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:31:43,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180558378] [2020-10-12 19:31:43,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:31:43,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:43,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:31:43,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:31:43,273 INFO L87 Difference]: Start difference. First operand 374 states and 526 transitions. Second operand 12 states. [2020-10-12 19:31:43,516 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:31:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:44,950 INFO L93 Difference]: Finished difference Result 643 states and 936 transitions. [2020-10-12 19:31:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:31:44,951 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-10-12 19:31:44,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:44,954 INFO L225 Difference]: With dead ends: 643 [2020-10-12 19:31:44,954 INFO L226 Difference]: Without dead ends: 466 [2020-10-12 19:31:44,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:31:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-12 19:31:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 371. [2020-10-12 19:31:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-12 19:31:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 522 transitions. [2020-10-12 19:31:45,027 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 522 transitions. Word has length 73 [2020-10-12 19:31:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:45,028 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 522 transitions. [2020-10-12 19:31:45,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:31:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 522 transitions. [2020-10-12 19:31:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 19:31:45,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:45,030 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] [2020-10-12 19:31:45,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 19:31:45,030 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:45,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1549984688, now seen corresponding path program 1 times [2020-10-12 19:31:45,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:45,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848043751] [2020-10-12 19:31:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:50,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:50,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 19:31:50,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:31:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:31:50,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:31:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 19:31:50,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:50,455 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:50,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:50,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:50,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:31:50,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:50,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:50,480 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 19:31:50,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848043751] [2020-10-12 19:31:50,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:50,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:31:50,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478686106] [2020-10-12 19:31:50,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:31:50,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:50,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:31:50,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:31:50,482 INFO L87 Difference]: Start difference. First operand 371 states and 522 transitions. Second operand 12 states. [2020-10-12 19:31:50,713 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:31:51,109 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-12 19:31:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:53,651 INFO L93 Difference]: Finished difference Result 730 states and 1068 transitions. [2020-10-12 19:31:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:31:53,652 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-10-12 19:31:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:53,654 INFO L225 Difference]: With dead ends: 730 [2020-10-12 19:31:53,654 INFO L226 Difference]: Without dead ends: 470 [2020-10-12 19:31:53,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:31:53,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-12 19:31:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 277. [2020-10-12 19:31:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-12 19:31:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 381 transitions. [2020-10-12 19:31:53,709 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 381 transitions. Word has length 73 [2020-10-12 19:31:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:53,709 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 381 transitions. [2020-10-12 19:31:53,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:31:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 381 transitions. [2020-10-12 19:31:53,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 19:31:53,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:53,710 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] [2020-10-12 19:31:53,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 19:31:53,710 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:53,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:53,711 INFO L82 PathProgramCache]: Analyzing trace with hash 691517270, now seen corresponding path program 1 times [2020-10-12 19:31:53,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:53,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223661479] [2020-10-12 19:31:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:54,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:54,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:58,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:58,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 19:31:58,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:31:58,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:31:58,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:31:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:31:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:59,272 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 19:31:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:59,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:59,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:59,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:59,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:31:59,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:59,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:59,315 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 19:31:59,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223661479] [2020-10-12 19:31:59,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:59,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:31:59,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314920596] [2020-10-12 19:31:59,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:31:59,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:31:59,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:31:59,317 INFO L87 Difference]: Start difference. First operand 277 states and 381 transitions. Second operand 13 states. [2020-10-12 19:31:59,608 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 150