/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-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:06:30,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:06:30,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:06:30,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:06:30,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:06:30,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:06:30,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:06:30,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:06:30,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:06:30,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:06:30,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:06:30,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:06:30,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:06:30,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:06:30,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:06:30,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:06:30,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:06:30,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:06:30,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:06:30,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:06:30,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:06:30,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:06:30,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:06:30,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:06:30,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:06:30,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:06:30,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:06:30,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:06:30,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:06:30,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:06:30,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:06:30,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:06:30,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:06:30,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:06:30,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:06:30,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:06:30,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:06:30,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:06:30,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:06:30,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:06:30,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:06:30,300 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 20:06:30,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:06:30,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:06:30,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:06:30,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:06:30,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:06:30,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:06:30,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:06:30,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:06:30,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:06:30,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:06:30,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:06:30,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:06:30,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:06:30,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:06:30,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:06:30,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:06:30,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:06:30,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:06:30,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:06:30,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:06:30,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:06:30,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:06:30,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:06:30,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:06:30,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:06:30,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:06:30,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:06:30,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:06:30,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:06:30,347 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 20:06:30,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:06:30,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:06:30,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:06:30,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:06:30,662 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:06:30,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-12 20:06:30,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/240a67544/8ed5cfcf2104412eada206176c987d10/FLAG5f428db83 [2020-10-12 20:06:31,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:06:31,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-12 20:06:31,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/240a67544/8ed5cfcf2104412eada206176c987d10/FLAG5f428db83 [2020-10-12 20:06:31,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/240a67544/8ed5cfcf2104412eada206176c987d10 [2020-10-12 20:06:31,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:06:31,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:06:31,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:06:31,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:06:31,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:06:31,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:06:31" (1/1) ... [2020-10-12 20:06:31,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1be01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:31, skipping insertion in model container [2020-10-12 20:06:31,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:06:31" (1/1) ... [2020-10-12 20:06:31,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:06:31,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:06:32,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:06:32,280 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:06:32,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:06:32,482 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:06:32,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32 WrapperNode [2020-10-12 20:06:32,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:06:32,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:06:32,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:06:32,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:06:32,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (1/1) ... [2020-10-12 20:06:32,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (1/1) ... [2020-10-12 20:06:32,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (1/1) ... [2020-10-12 20:06:32,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (1/1) ... [2020-10-12 20:06:32,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (1/1) ... [2020-10-12 20:06:32,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (1/1) ... [2020-10-12 20:06:32,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (1/1) ... [2020-10-12 20:06:32,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:06:32,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:06:32,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:06:32,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:06:32,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (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 20:06:32,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:06:32,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:06:32,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:06:32,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:06:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:06:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:06:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:06:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:06:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:06:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:06:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:06:34,103 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:06:34,104 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:06:34,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:06:34 BoogieIcfgContainer [2020-10-12 20:06:34,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:06:34,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:06:34,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:06:34,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:06:34,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:06:31" (1/3) ... [2020-10-12 20:06:34,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e60345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:06:34, skipping insertion in model container [2020-10-12 20:06:34,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:32" (2/3) ... [2020-10-12 20:06:34,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e60345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:06:34, skipping insertion in model container [2020-10-12 20:06:34,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:06:34" (3/3) ... [2020-10-12 20:06:34,120 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-12 20:06:34,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:06:34,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:06:34,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:06:34,183 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:06:34,183 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:06:34,183 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:06:34,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:06:34,184 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:06:34,184 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:06:34,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:06:34,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:06:34,219 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-10-12 20:06:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 20:06:34,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:34,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:34,244 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash 182242760, now seen corresponding path program 1 times [2020-10-12 20:06:34,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:34,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922951862] [2020-10-12 20:06:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:39,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:39,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:06:39,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:06:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:06:39,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:06:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:06:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:06:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 20:06:40,024 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:06:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:40,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:40,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:40,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:40,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:40,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:06:40,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:40,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:40,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:40,075 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 20:06:40,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922951862] [2020-10-12 20:06:40,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:40,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:06:40,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633919017] [2020-10-12 20:06:40,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:06:40,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:40,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:06:40,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:06:40,103 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 5 states. [2020-10-12 20:06:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:41,987 INFO L93 Difference]: Finished difference Result 697 states and 1128 transitions. [2020-10-12 20:06:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:06:41,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 20:06:41,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:42,022 INFO L225 Difference]: With dead ends: 697 [2020-10-12 20:06:42,022 INFO L226 Difference]: Without dead ends: 407 [2020-10-12 20:06:42,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:06:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-12 20:06:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2020-10-12 20:06:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-12 20:06:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 657 transitions. [2020-10-12 20:06:42,139 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 657 transitions. Word has length 107 [2020-10-12 20:06:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:42,140 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 657 transitions. [2020-10-12 20:06:42,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:06:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 657 transitions. [2020-10-12 20:06:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:06:42,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:42,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:42,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:06:42,151 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:42,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash -604801639, now seen corresponding path program 1 times [2020-10-12 20:06:42,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:42,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031443626] [2020-10-12 20:06:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:42,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:43,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:44,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:47,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:47,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 20:06:47,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:06:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:06:47,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:06:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:06:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:06:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:47,432 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:06:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:47,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:47,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:47,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:06:47,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:47,476 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 20:06:47,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031443626] [2020-10-12 20:06:47,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:47,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:06:47,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778759462] [2020-10-12 20:06:47,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:06:47,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:06:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:06:47,479 INFO L87 Difference]: Start difference. First operand 407 states and 657 transitions. Second operand 5 states. [2020-10-12 20:06:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:49,062 INFO L93 Difference]: Finished difference Result 776 states and 1244 transitions. [2020-10-12 20:06:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:06:49,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:06:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:49,068 INFO L225 Difference]: With dead ends: 776 [2020-10-12 20:06:49,068 INFO L226 Difference]: Without dead ends: 407 [2020-10-12 20:06:49,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:06:49,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-12 20:06:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2020-10-12 20:06:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-12 20:06:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 625 transitions. [2020-10-12 20:06:49,091 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 625 transitions. Word has length 108 [2020-10-12 20:06:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:49,091 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 625 transitions. [2020-10-12 20:06:49,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:06:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 625 transitions. [2020-10-12 20:06:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 20:06:49,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:49,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:49,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:06:49,095 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:49,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:49,095 INFO L82 PathProgramCache]: Analyzing trace with hash 383420821, now seen corresponding path program 1 times [2020-10-12 20:06:49,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:49,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085645414] [2020-10-12 20:06:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:51,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:54,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:54,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 20:06:54,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:06:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:06:54,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:06:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 20:06:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:54,418 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:06:54,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:54,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:54,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:54,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:54,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:06:54,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:54,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:54,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:06:54,493 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 20:06:54,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085645414] [2020-10-12 20:06:54,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:54,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:54,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280639816] [2020-10-12 20:06:54,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:54,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:54,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:54,498 INFO L87 Difference]: Start difference. First operand 407 states and 625 transitions. Second operand 8 states. [2020-10-12 20:06:54,740 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-12 20:06:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:56,935 INFO L93 Difference]: Finished difference Result 2280 states and 3603 transitions. [2020-10-12 20:06:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:06:56,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-10-12 20:06:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:56,949 INFO L225 Difference]: With dead ends: 2280 [2020-10-12 20:06:56,949 INFO L226 Difference]: Without dead ends: 2001 [2020-10-12 20:06:56,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:06:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2020-10-12 20:06:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 759. [2020-10-12 20:06:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-10-12 20:06:57,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1181 transitions. [2020-10-12 20:06:57,008 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1181 transitions. Word has length 139 [2020-10-12 20:06:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:57,009 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 1181 transitions. [2020-10-12 20:06:57,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1181 transitions. [2020-10-12 20:06:57,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:06:57,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:57,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:57,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:06:57,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 433391352, now seen corresponding path program 1 times [2020-10-12 20:06:57,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:57,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345840467] [2020-10-12 20:06:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:57,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:02,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:02,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 20:07:02,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:07:02,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:07:02,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:07:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:07:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:02,377 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:07:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:02,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:02,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:02,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 20:07:02,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:02,493 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 20:07:02,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345840467] [2020-10-12 20:07:02,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:02,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:07:02,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246483264] [2020-10-12 20:07:02,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:07:02,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:02,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:07:02,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:07:02,496 INFO L87 Difference]: Start difference. First operand 759 states and 1181 transitions. Second operand 7 states. [2020-10-12 20:07:02,812 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 20:07:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:04,761 INFO L93 Difference]: Finished difference Result 1616 states and 2540 transitions. [2020-10-12 20:07:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:07:04,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-12 20:07:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:04,769 INFO L225 Difference]: With dead ends: 1616 [2020-10-12 20:07:04,770 INFO L226 Difference]: Without dead ends: 975 [2020-10-12 20:07:04,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:07:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-12 20:07:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 753. [2020-10-12 20:07:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-12 20:07:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1167 transitions. [2020-10-12 20:07:04,836 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1167 transitions. Word has length 142 [2020-10-12 20:07:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:04,836 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 1167 transitions. [2020-10-12 20:07:04,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:07:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1167 transitions. [2020-10-12 20:07:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:07:04,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:04,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:04,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:07:04,842 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:04,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:04,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1290221703, now seen corresponding path program 1 times [2020-10-12 20:07:04,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:04,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483378442] [2020-10-12 20:07:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:04,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:09,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 20:07:09,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:07:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:07:09,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:07:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:07:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:07:09,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:10,161 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:07:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:10,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:07:10,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:07:10,260 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 20:07:10,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483378442] [2020-10-12 20:07:10,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:10,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:07:10,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319306389] [2020-10-12 20:07:10,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:07:10,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:07:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:10,263 INFO L87 Difference]: Start difference. First operand 753 states and 1167 transitions. Second operand 8 states. [2020-10-12 20:07:10,557 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-12 20:07:12,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:12,726 INFO L93 Difference]: Finished difference Result 2971 states and 4683 transitions. [2020-10-12 20:07:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:07:12,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-10-12 20:07:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:12,742 INFO L225 Difference]: With dead ends: 2971 [2020-10-12 20:07:12,743 INFO L226 Difference]: Without dead ends: 2784 [2020-10-12 20:07:12,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:07:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2020-10-12 20:07:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1308. [2020-10-12 20:07:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1308 states. [2020-10-12 20:07:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2046 transitions. [2020-10-12 20:07:12,831 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2046 transitions. Word has length 142 [2020-10-12 20:07:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:12,832 INFO L479 AbstractCegarLoop]: Abstraction has 1308 states and 2046 transitions. [2020-10-12 20:07:12,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:07:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2046 transitions. [2020-10-12 20:07:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:07:12,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:12,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:12,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:07:12,836 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash 226260916, now seen corresponding path program 1 times [2020-10-12 20:07:12,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:12,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153875348] [2020-10-12 20:07:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:17,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:17,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 20:07:17,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:07:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:07:17,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:07:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 20:07:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:18,180 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:07:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:18,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:18,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:07:18,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:18,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153875348] [2020-10-12 20:07:18,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:18,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:07:18,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509109003] [2020-10-12 20:07:18,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:07:18,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:07:18,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:18,269 INFO L87 Difference]: Start difference. First operand 1308 states and 2046 transitions. Second operand 8 states. [2020-10-12 20:07:18,470 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 20:07:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:21,012 INFO L93 Difference]: Finished difference Result 5272 states and 8243 transitions. [2020-10-12 20:07:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:07:21,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-10-12 20:07:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:21,031 INFO L225 Difference]: With dead ends: 5272 [2020-10-12 20:07:21,031 INFO L226 Difference]: Without dead ends: 4160 [2020-10-12 20:07:21,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:07:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2020-10-12 20:07:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 1337. [2020-10-12 20:07:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-10-12 20:07:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2050 transitions. [2020-10-12 20:07:21,161 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2050 transitions. Word has length 142 [2020-10-12 20:07:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:21,162 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 2050 transitions. [2020-10-12 20:07:21,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:07:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2050 transitions. [2020-10-12 20:07:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:07:21,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:21,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:21,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:07:21,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1794197388, now seen corresponding path program 1 times [2020-10-12 20:07:21,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:21,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765769488] [2020-10-12 20:07:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:21,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:23,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:26,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 20:07:26,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:07:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:07:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:07:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:07:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:07:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:26,426 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:07:26,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:26,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:26,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:07:26,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:26,477 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 20:07:26,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765769488] [2020-10-12 20:07:26,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:26,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:07:26,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615585041] [2020-10-12 20:07:26,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:07:26,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:26,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:07:26,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:26,479 INFO L87 Difference]: Start difference. First operand 1337 states and 2050 transitions. Second operand 8 states. [2020-10-12 20:07:26,713 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-12 20:07:28,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:28,735 INFO L93 Difference]: Finished difference Result 3575 states and 5512 transitions. [2020-10-12 20:07:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:07:28,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-10-12 20:07:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:28,752 INFO L225 Difference]: With dead ends: 3575 [2020-10-12 20:07:28,752 INFO L226 Difference]: Without dead ends: 3296 [2020-10-12 20:07:28,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:07:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2020-10-12 20:07:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 1563. [2020-10-12 20:07:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-10-12 20:07:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2403 transitions. [2020-10-12 20:07:28,885 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2403 transitions. Word has length 142 [2020-10-12 20:07:28,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:28,886 INFO L479 AbstractCegarLoop]: Abstraction has 1563 states and 2403 transitions. [2020-10-12 20:07:28,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:07:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2403 transitions. [2020-10-12 20:07:28,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:07:28,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:28,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:28,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:07:28,891 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:28,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1815400830, now seen corresponding path program 1 times [2020-10-12 20:07:28,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:28,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069486952] [2020-10-12 20:07:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:28,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:33,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:33,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 20:07:33,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:07:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:07:33,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:07:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:07:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:34,148 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:07:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:34,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:34,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:34,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:34,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:07:34,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:34,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:34,181 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 20:07:34,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069486952] [2020-10-12 20:07:34,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:34,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:07:34,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637479458] [2020-10-12 20:07:34,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:07:34,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:34,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:07:34,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:07:34,183 INFO L87 Difference]: Start difference. First operand 1563 states and 2403 transitions. Second operand 4 states. [2020-10-12 20:07:34,378 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-12 20:07:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:36,691 INFO L93 Difference]: Finished difference Result 3850 states and 5944 transitions. [2020-10-12 20:07:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:07:36,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-12 20:07:36,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:36,704 INFO L225 Difference]: With dead ends: 3850 [2020-10-12 20:07:36,704 INFO L226 Difference]: Without dead ends: 2794 [2020-10-12 20:07:36,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:07:36,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2020-10-12 20:07:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2638. [2020-10-12 20:07:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2638 states. [2020-10-12 20:07:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4041 transitions. [2020-10-12 20:07:36,960 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4041 transitions. Word has length 142 [2020-10-12 20:07:36,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:36,960 INFO L479 AbstractCegarLoop]: Abstraction has 2638 states and 4041 transitions. [2020-10-12 20:07:36,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:07:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4041 transitions. [2020-10-12 20:07:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 20:07:36,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:36,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:36,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:07:36,969 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:36,969 INFO L82 PathProgramCache]: Analyzing trace with hash 971754672, now seen corresponding path program 1 times [2020-10-12 20:07:36,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:36,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578821383] [2020-10-12 20:07:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:42,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:42,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 20:07:42,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:07:42,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:07:42,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:07:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:07:42,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:42,212 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:07:42,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:42,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:42,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:42,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:07:42,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:42,241 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 20:07:42,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578821383] [2020-10-12 20:07:42,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:42,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:07:42,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791775651] [2020-10-12 20:07:42,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:07:42,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:42,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:07:42,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:07:42,243 INFO L87 Difference]: Start difference. First operand 2638 states and 4041 transitions. Second operand 4 states. [2020-10-12 20:07:42,433 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-12 20:07:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:44,355 INFO L93 Difference]: Finished difference Result 7208 states and 11068 transitions. [2020-10-12 20:07:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:07:44,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-12 20:07:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:44,377 INFO L225 Difference]: With dead ends: 7208 [2020-10-12 20:07:44,377 INFO L226 Difference]: Without dead ends: 5051 [2020-10-12 20:07:44,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:07:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2020-10-12 20:07:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 4752. [2020-10-12 20:07:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4752 states. [2020-10-12 20:07:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 7232 transitions. [2020-10-12 20:07:44,755 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 7232 transitions. Word has length 144 [2020-10-12 20:07:44,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:44,755 INFO L479 AbstractCegarLoop]: Abstraction has 4752 states and 7232 transitions. [2020-10-12 20:07:44,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:07:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 7232 transitions. [2020-10-12 20:07:44,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 20:07:44,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:44,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:44,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:07:44,770 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:44,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:44,770 INFO L82 PathProgramCache]: Analyzing trace with hash -612250024, now seen corresponding path program 1 times [2020-10-12 20:07:44,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:44,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795694018] [2020-10-12 20:07:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:47,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:49,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:49,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 20:07:49,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:07:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:07:49,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 20:07:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:07:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:50,006 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:07:50,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:07:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:50,039 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 20:07:50,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795694018] [2020-10-12 20:07:50,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:50,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:07:50,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702182126] [2020-10-12 20:07:50,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:07:50,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:50,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:07:50,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:07:50,041 INFO L87 Difference]: Start difference. First operand 4752 states and 7232 transitions. Second operand 4 states. [2020-10-12 20:07:50,239 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-12 20:07:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:52,824 INFO L93 Difference]: Finished difference Result 12524 states and 19057 transitions. [2020-10-12 20:07:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:07:52,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-12 20:07:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:52,853 INFO L225 Difference]: With dead ends: 12524 [2020-10-12 20:07:52,853 INFO L226 Difference]: Without dead ends: 8784 [2020-10-12 20:07:52,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:07:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8784 states. [2020-10-12 20:07:53,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8784 to 8232. [2020-10-12 20:07:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8232 states. [2020-10-12 20:07:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 12401 transitions. [2020-10-12 20:07:53,420 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 12401 transitions. Word has length 146 [2020-10-12 20:07:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:53,420 INFO L479 AbstractCegarLoop]: Abstraction has 8232 states and 12401 transitions. [2020-10-12 20:07:53,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:07:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 12401 transitions. [2020-10-12 20:07:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 20:07:53,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:53,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:53,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:07:53,438 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:53,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:53,438 INFO L82 PathProgramCache]: Analyzing trace with hash 955276000, now seen corresponding path program 1 times [2020-10-12 20:07:53,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:53,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856716264] [2020-10-12 20:07:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:53,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:58,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 20:07:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:07:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:07:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 20:07:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:07:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:58,651 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:07:58,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:58,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:58,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:58,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:07:58,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:58,684 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 20:07:58,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856716264] [2020-10-12 20:07:58,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:58,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:07:58,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909617218] [2020-10-12 20:07:58,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:07:58,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:07:58,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:07:58,687 INFO L87 Difference]: Start difference. First operand 8232 states and 12401 transitions. Second operand 4 states. [2020-10-12 20:07:58,891 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 20:08:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:01,540 INFO L93 Difference]: Finished difference Result 22238 states and 33489 transitions. [2020-10-12 20:08:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:08:01,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-12 20:08:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:01,570 INFO L225 Difference]: With dead ends: 22238 [2020-10-12 20:08:01,571 INFO L226 Difference]: Without dead ends: 14054 [2020-10-12 20:08:01,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:08:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2020-10-12 20:08:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 14052. [2020-10-12 20:08:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14052 states. [2020-10-12 20:08:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14052 states to 14052 states and 21062 transitions. [2020-10-12 20:08:02,591 INFO L78 Accepts]: Start accepts. Automaton has 14052 states and 21062 transitions. Word has length 148 [2020-10-12 20:08:02,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:02,592 INFO L479 AbstractCegarLoop]: Abstraction has 14052 states and 21062 transitions. [2020-10-12 20:08:02,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:08:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 14052 states and 21062 transitions. [2020-10-12 20:08:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 20:08:02,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:02,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:02,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:08:02,611 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:02,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:02,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1616605060, now seen corresponding path program 1 times [2020-10-12 20:08:02,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:02,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989816526] [2020-10-12 20:08:02,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:07,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:07,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 20:08:07,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:08:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:08:07,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:08:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-12 20:08:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:08:07,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:07,856 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:08:07,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:07,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:07,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:07,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:08:07,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:08:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:08:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:07,882 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 20:08:07,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989816526] [2020-10-12 20:08:07,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:07,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:08:07,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880823241] [2020-10-12 20:08:07,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:08:07,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:07,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:08:07,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:08:07,884 INFO L87 Difference]: Start difference. First operand 14052 states and 21062 transitions. Second operand 5 states. [2020-10-12 20:08:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:11,035 INFO L93 Difference]: Finished difference Result 18856 states and 28267 transitions. [2020-10-12 20:08:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:08:11,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-12 20:08:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:11,077 INFO L225 Difference]: With dead ends: 18856 [2020-10-12 20:08:11,077 INFO L226 Difference]: Without dead ends: 18854 [2020-10-12 20:08:11,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:08:11,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18854 states. [2020-10-12 20:08:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18854 to 14180. [2020-10-12 20:08:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14180 states. [2020-10-12 20:08:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14180 states to 14180 states and 21190 transitions. [2020-10-12 20:08:12,851 INFO L78 Accepts]: Start accepts. Automaton has 14180 states and 21190 transitions. Word has length 148 [2020-10-12 20:08:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:12,852 INFO L479 AbstractCegarLoop]: Abstraction has 14180 states and 21190 transitions. [2020-10-12 20:08:12,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:08:12,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14180 states and 21190 transitions. [2020-10-12 20:08:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 20:08:12,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:12,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:12,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:08:12,870 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash -90177196, now seen corresponding path program 1 times [2020-10-12 20:08:12,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:12,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682110775] [2020-10-12 20:08:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:17,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:17,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 20:08:17,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:08:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:08:17,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:08:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:08:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 20:08:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:18,118 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:08:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:18,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:18,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:18,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:08:18,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:08:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:08:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:18,157 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 20:08:18,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682110775] [2020-10-12 20:08:18,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:18,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:08:18,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770704181] [2020-10-12 20:08:18,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:08:18,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:18,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:08:18,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:08:18,160 INFO L87 Difference]: Start difference. First operand 14180 states and 21190 transitions. Second operand 8 states. [2020-10-12 20:08:18,395 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-12 20:08:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:22,181 INFO L93 Difference]: Finished difference Result 32600 states and 48783 transitions. [2020-10-12 20:08:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:08:22,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2020-10-12 20:08:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:22,228 INFO L225 Difference]: With dead ends: 32600 [2020-10-12 20:08:22,229 INFO L226 Difference]: Without dead ends: 29550 [2020-10-12 20:08:22,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:08:22,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29550 states. [2020-10-12 20:08:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29550 to 16986. [2020-10-12 20:08:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16986 states. [2020-10-12 20:08:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16986 states to 16986 states and 25392 transitions. [2020-10-12 20:08:23,577 INFO L78 Accepts]: Start accepts. Automaton has 16986 states and 25392 transitions. Word has length 148 [2020-10-12 20:08:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:23,578 INFO L479 AbstractCegarLoop]: Abstraction has 16986 states and 25392 transitions. [2020-10-12 20:08:23,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:08:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 16986 states and 25392 transitions. [2020-10-12 20:08:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 20:08:23,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:23,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:23,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:08:23,600 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:23,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1702823573, now seen corresponding path program 1 times [2020-10-12 20:08:23,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:23,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891175305] [2020-10-12 20:08:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:28,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:28,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 20:08:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:08:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:08:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:08:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:08:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 20:08:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:28,835 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:08:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:28,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:28,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:28,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:28,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:08:28,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:28,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:08:28,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:28,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:08:28,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:28,872 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 20:08:28,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891175305] [2020-10-12 20:08:28,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:28,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:08:28,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470301824] [2020-10-12 20:08:28,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:08:28,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:28,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:08:28,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:08:28,873 INFO L87 Difference]: Start difference. First operand 16986 states and 25392 transitions. Second operand 8 states. [2020-10-12 20:08:29,100 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-12 20:08:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:33,474 INFO L93 Difference]: Finished difference Result 35750 states and 53453 transitions. [2020-10-12 20:08:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:08:33,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2020-10-12 20:08:33,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:33,523 INFO L225 Difference]: With dead ends: 35750 [2020-10-12 20:08:33,523 INFO L226 Difference]: Without dead ends: 33184 [2020-10-12 20:08:33,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:08:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33184 states. [2020-10-12 20:08:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33184 to 19948. [2020-10-12 20:08:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19948 states. [2020-10-12 20:08:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19948 states to 19948 states and 29828 transitions. [2020-10-12 20:08:35,301 INFO L78 Accepts]: Start accepts. Automaton has 19948 states and 29828 transitions. Word has length 148 [2020-10-12 20:08:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:35,301 INFO L479 AbstractCegarLoop]: Abstraction has 19948 states and 29828 transitions. [2020-10-12 20:08:35,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:08:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 19948 states and 29828 transitions. [2020-10-12 20:08:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 20:08:35,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:35,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:35,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:08:35,320 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1434470762, now seen corresponding path program 1 times [2020-10-12 20:08:35,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:35,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315746021] [2020-10-12 20:08:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:35,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:40,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:40,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 20:08:40,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:08:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 20:08:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:08:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:08:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 20:08:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:40,608 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:08:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:40,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:40,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:08:40,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:08:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:08:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:40,670 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 20:08:40,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315746021] [2020-10-12 20:08:40,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:40,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:08:40,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496490905] [2020-10-12 20:08:40,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:08:40,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:40,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:08:40,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:08:40,672 INFO L87 Difference]: Start difference. First operand 19948 states and 29828 transitions. Second operand 6 states. [2020-10-12 20:08:40,863 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 20:08:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:47,087 INFO L93 Difference]: Finished difference Result 57588 states and 86198 transitions. [2020-10-12 20:08:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:08:47,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-10-12 20:08:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:47,133 INFO L225 Difference]: With dead ends: 57588 [2020-10-12 20:08:47,133 INFO L226 Difference]: Without dead ends: 40122 [2020-10-12 20:08:47,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:08:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40122 states. [2020-10-12 20:08:50,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40122 to 40116. [2020-10-12 20:08:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40116 states. [2020-10-12 20:08:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40116 states to 40116 states and 59518 transitions. [2020-10-12 20:08:50,858 INFO L78 Accepts]: Start accepts. Automaton has 40116 states and 59518 transitions. Word has length 149 [2020-10-12 20:08:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:50,859 INFO L479 AbstractCegarLoop]: Abstraction has 40116 states and 59518 transitions. [2020-10-12 20:08:50,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:08:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand 40116 states and 59518 transitions. [2020-10-12 20:08:50,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 20:08:50,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:50,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:50,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:08:50,892 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:50,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2081185242, now seen corresponding path program 1 times [2020-10-12 20:08:50,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:50,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261190859] [2020-10-12 20:08:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:55,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 20:08:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:08:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:08:55,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:55,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:08:55,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 20:08:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 20:08:55,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:56,140 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:08:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:56,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:56,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:56,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:08:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:08:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:08:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:56,180 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 20:08:56,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261190859] [2020-10-12 20:08:56,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:56,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:08:56,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392421992] [2020-10-12 20:08:56,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:08:56,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:08:56,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:08:56,182 INFO L87 Difference]: Start difference. First operand 40116 states and 59518 transitions. Second operand 8 states. [2020-10-12 20:08:56,414 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-12 20:09:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:04,470 INFO L93 Difference]: Finished difference Result 80886 states and 120157 transitions. [2020-10-12 20:09:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:09:04,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-10-12 20:09:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:04,557 INFO L225 Difference]: With dead ends: 80886 [2020-10-12 20:09:04,557 INFO L226 Difference]: Without dead ends: 75372 [2020-10-12 20:09:04,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:09:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75372 states. [2020-10-12 20:09:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75372 to 44422. [2020-10-12 20:09:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44422 states. [2020-10-12 20:09:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44422 states to 44422 states and 65882 transitions. [2020-10-12 20:09:08,859 INFO L78 Accepts]: Start accepts. Automaton has 44422 states and 65882 transitions. Word has length 149 [2020-10-12 20:09:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:08,860 INFO L479 AbstractCegarLoop]: Abstraction has 44422 states and 65882 transitions. [2020-10-12 20:09:08,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:09:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 44422 states and 65882 transitions. [2020-10-12 20:09:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 20:09:08,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:08,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:08,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:09:08,898 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:08,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:08,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1623548444, now seen corresponding path program 1 times [2020-10-12 20:09:08,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:08,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939948049] [2020-10-12 20:09:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:08,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:08,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:09,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:13,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:13,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 20:09:13,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:09:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:09:13,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:09:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 20:09:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:09:13,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:14,187 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:09:14,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:14,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:14,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:14,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:09:14,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:09:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:09:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:14,222 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 20:09:14,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939948049] [2020-10-12 20:09:14,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:14,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:09:14,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187008184] [2020-10-12 20:09:14,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:09:14,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:14,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:09:14,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:09:14,224 INFO L87 Difference]: Start difference. First operand 44422 states and 65882 transitions. Second operand 9 states. [2020-10-12 20:09:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:26,141 INFO L93 Difference]: Finished difference Result 92853 states and 137741 transitions. [2020-10-12 20:09:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:09:26,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-10-12 20:09:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:26,221 INFO L225 Difference]: With dead ends: 92853 [2020-10-12 20:09:26,222 INFO L226 Difference]: Without dead ends: 83739 [2020-10-12 20:09:26,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:09:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83739 states. [2020-10-12 20:09:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83739 to 44848. [2020-10-12 20:09:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44848 states. [2020-10-12 20:09:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44848 states to 44848 states and 66505 transitions. [2020-10-12 20:09:30,624 INFO L78 Accepts]: Start accepts. Automaton has 44848 states and 66505 transitions. Word has length 151 [2020-10-12 20:09:30,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:30,624 INFO L479 AbstractCegarLoop]: Abstraction has 44848 states and 66505 transitions. [2020-10-12 20:09:30,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:09:30,625 INFO L276 IsEmpty]: Start isEmpty. Operand 44848 states and 66505 transitions. [2020-10-12 20:09:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 20:09:30,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:30,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:30,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:09:30,657 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:30,657 INFO L82 PathProgramCache]: Analyzing trace with hash 169452325, now seen corresponding path program 1 times [2020-10-12 20:09:30,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:30,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670301065] [2020-10-12 20:09:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:30,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:30,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:30,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:30,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:32,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:35,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:35,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 20:09:35,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:09:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:09:35,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:09:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 20:09:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 20:09:35,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:09:35,945 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:09:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:35,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:35,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:35,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:09:35,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:09:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:09:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:35,989 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 20:09:35,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670301065] [2020-10-12 20:09:35,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:35,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:09:35,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56592124] [2020-10-12 20:09:35,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:09:35,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:35,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:09:35,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:09:35,994 INFO L87 Difference]: Start difference. First operand 44848 states and 66505 transitions. Second operand 9 states. [2020-10-12 20:09:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:46,951 INFO L93 Difference]: Finished difference Result 88355 states and 131158 transitions. [2020-10-12 20:09:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:09:46,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-10-12 20:09:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:47,039 INFO L225 Difference]: With dead ends: 88355 [2020-10-12 20:09:47,039 INFO L226 Difference]: Without dead ends: 80153 [2020-10-12 20:09:47,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:09:47,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80153 states. [2020-10-12 20:09:53,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80153 to 45075. [2020-10-12 20:09:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45075 states. [2020-10-12 20:09:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45075 states to 45075 states and 66840 transitions. [2020-10-12 20:09:53,426 INFO L78 Accepts]: Start accepts. Automaton has 45075 states and 66840 transitions. Word has length 151 [2020-10-12 20:09:53,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:53,426 INFO L479 AbstractCegarLoop]: Abstraction has 45075 states and 66840 transitions. [2020-10-12 20:09:53,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:09:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 45075 states and 66840 transitions. [2020-10-12 20:09:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 20:09:53,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:53,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:53,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:09:53,457 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:53,457 INFO L82 PathProgramCache]: Analyzing trace with hash -235454476, now seen corresponding path program 1 times [2020-10-12 20:09:53,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:53,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762721504] [2020-10-12 20:09:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:53,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:53,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:53,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:53,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:54,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:58,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:58,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 20:09:58,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:09:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:09:58,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:09:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 20:09:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:09:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:58,716 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:09:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:58,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:58,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:58,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:09:58,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:09:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:09:58,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:58,765 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 20:09:58,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762721504] [2020-10-12 20:09:58,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:58,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:09:58,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322154059] [2020-10-12 20:09:58,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:09:58,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:58,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:09:58,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:09:58,767 INFO L87 Difference]: Start difference. First operand 45075 states and 66840 transitions. Second operand 9 states.