/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:23:50,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:23:50,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:23:50,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:23:50,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:23:50,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:23:50,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:23:50,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:23:50,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:23:50,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:23:50,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:23:50,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:23:50,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:23:50,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:23:50,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:23:50,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:23:50,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:23:50,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:23:50,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:23:50,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:23:50,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:23:50,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:23:50,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:23:50,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:23:50,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:23:50,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:23:50,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:23:50,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:23:50,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:23:50,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:23:50,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:23:50,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:23:50,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:23:50,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:23:50,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:23:50,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:23:50,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:23:50,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:23:50,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:23:50,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:23:50,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:23:50,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:23:50,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:23:50,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:23:50,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:23:50,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:23:50,352 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:23:50,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:23:50,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:23:50,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:23:50,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:23:50,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:23:50,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:23:50,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:23:50,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:23:50,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:23:50,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:23:50,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:23:50,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:23:50,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:23:50,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:23:50,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:23:50,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:23:50,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:23:50,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:23:50,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:23:50,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:23:50,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:23:50,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:23:50,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:23:50,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:23:50,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:23:50,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:23:50,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:23:50,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:23:50,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:23:50,689 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:23:50,690 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-12 19:23:50,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/714392e88/02146405445c442eb31c24f073d64a15/FLAGba31508b1 [2020-10-12 19:23:51,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:23:51,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-12 19:23:51,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/714392e88/02146405445c442eb31c24f073d64a15/FLAGba31508b1 [2020-10-12 19:23:51,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/714392e88/02146405445c442eb31c24f073d64a15 [2020-10-12 19:23:51,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:23:51,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:23:51,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:23:51,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:23:51,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:23:51,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:23:51" (1/1) ... [2020-10-12 19:23:51,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1225839d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:51, skipping insertion in model container [2020-10-12 19:23:51,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:23:51" (1/1) ... [2020-10-12 19:23:51,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:23:51,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:23:53,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:23:53,368 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:23:54,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:23:54,590 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:23:54,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54 WrapperNode [2020-10-12 19:23:54,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:23:54,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:23:54,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:23:54,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:23:54,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (1/1) ... [2020-10-12 19:23:54,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (1/1) ... [2020-10-12 19:23:54,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (1/1) ... [2020-10-12 19:23:54,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (1/1) ... [2020-10-12 19:23:54,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (1/1) ... [2020-10-12 19:23:54,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (1/1) ... [2020-10-12 19:23:54,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (1/1) ... [2020-10-12 19:23:54,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:23:54,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:23:54,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:23:54,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:23:54,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:23:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:23:54,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:23:54,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:23:54,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:23:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:23:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:23:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:23:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:23:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:23:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:23:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:23:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:23:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:23:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:23:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:23:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:23:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:23:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:23:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:23:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:23:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:23:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:23:58,838 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:23:58,839 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:23:58,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:23:58 BoogieIcfgContainer [2020-10-12 19:23:58,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:23:58,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:23:58,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:23:58,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:23:58,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:23:51" (1/3) ... [2020-10-12 19:23:58,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f015e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:23:58, skipping insertion in model container [2020-10-12 19:23:58,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:23:54" (2/3) ... [2020-10-12 19:23:58,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f015e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:23:58, skipping insertion in model container [2020-10-12 19:23:58,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:23:58" (3/3) ... [2020-10-12 19:23:58,859 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-12 19:23:58,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:23:58,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-12 19:23:58,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-12 19:23:58,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:23:58,928 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:23:58,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:23:58,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:23:58,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:23:58,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:23:58,929 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:23:58,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:23:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states. [2020-10-12 19:23:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-12 19:23:59,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:23:59,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:23:59,014 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:23:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:23:59,021 INFO L82 PathProgramCache]: Analyzing trace with hash -856462850, now seen corresponding path program 1 times [2020-10-12 19:23:59,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:23:59,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213812561] [2020-10-12 19:23:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:05,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:06,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:06,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-12 19:24:06,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:24:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-12 19:24:06,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:24:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:24:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-12 19:24:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:24:07,827 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 19:24:07,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:24:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:07,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:07,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:24:07,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:24:07,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 19:24:07,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:24:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:24:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:24:07,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:24:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:24:08,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213812561] [2020-10-12 19:24:08,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:24:08,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:24:08,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802932174] [2020-10-12 19:24:08,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:24:08,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:24:08,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:24:08,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:24:08,390 INFO L87 Difference]: Start difference. First operand 1371 states. Second operand 5 states. [2020-10-12 19:24:24,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:24:24,449 INFO L93 Difference]: Finished difference Result 4054 states and 7340 transitions. [2020-10-12 19:24:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:24:24,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 464 [2020-10-12 19:24:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:24:24,495 INFO L225 Difference]: With dead ends: 4054 [2020-10-12 19:24:24,495 INFO L226 Difference]: Without dead ends: 2694 [2020-10-12 19:24:24,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:24:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2020-10-12 19:24:24,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2664. [2020-10-12 19:24:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-10-12 19:24:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 4377 transitions. [2020-10-12 19:24:24,753 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 4377 transitions. Word has length 464 [2020-10-12 19:24:24,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:24:24,755 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 4377 transitions. [2020-10-12 19:24:24,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:24:24,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 4377 transitions. [2020-10-12 19:24:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-12 19:24:24,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:24:24,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:24:24,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:24:24,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:24:24,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:24:24,772 INFO L82 PathProgramCache]: Analyzing trace with hash 908736954, now seen corresponding path program 1 times [2020-10-12 19:24:24,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:24:24,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832542935] [2020-10-12 19:24:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:25,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:27,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:27,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:28,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:29,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:29,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:30,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:30,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-12 19:24:30,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:24:30,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5280 [2020-10-12 19:24:30,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:30,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:24:30,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:24:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-12 19:24:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:24:31,574 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 19:24:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:24:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:31,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:31,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:24:31,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:24:31,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 19:24:31,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:31,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:24:31,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:24:31,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:24:31,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:24:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:24:32,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832542935] [2020-10-12 19:24:32,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:24:32,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:24:32,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220602349] [2020-10-12 19:24:32,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:24:32,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:24:32,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:24:32,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:24:32,364 INFO L87 Difference]: Start difference. First operand 2664 states and 4377 transitions. Second operand 5 states. [2020-10-12 19:24:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:24:46,638 INFO L93 Difference]: Finished difference Result 7819 states and 12833 transitions. [2020-10-12 19:24:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:24:46,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2020-10-12 19:24:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:24:46,667 INFO L225 Difference]: With dead ends: 7819 [2020-10-12 19:24:46,668 INFO L226 Difference]: Without dead ends: 5222 [2020-10-12 19:24:46,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:24:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2020-10-12 19:24:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5194. [2020-10-12 19:24:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5194 states. [2020-10-12 19:24:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 8494 transitions. [2020-10-12 19:24:46,905 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 8494 transitions. Word has length 466 [2020-10-12 19:24:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:24:46,908 INFO L479 AbstractCegarLoop]: Abstraction has 5194 states and 8494 transitions. [2020-10-12 19:24:46,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:24:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 8494 transitions. [2020-10-12 19:24:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-12 19:24:46,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:24:46,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:24:46,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:24:46,940 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:24:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:24:46,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1070474270, now seen corresponding path program 1 times [2020-10-12 19:24:46,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:24:46,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139111625] [2020-10-12 19:24:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:47,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:48,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:50,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:51,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:52,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:52,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-12 19:24:52,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:24:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-12 19:24:52,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:24:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:24:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 19:24:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:24:53,335 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 19:24:53,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:24:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:53,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:53,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:24:53,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:24:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 19:24:53,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:24:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:24:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:24:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:24:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:24:53,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139111625] [2020-10-12 19:24:53,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:24:53,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:24:53,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671318760] [2020-10-12 19:24:53,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:24:53,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:24:53,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:24:53,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:24:53,847 INFO L87 Difference]: Start difference. First operand 5194 states and 8494 transitions. Second operand 5 states. [2020-10-12 19:25:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:09,595 INFO L93 Difference]: Finished difference Result 15072 states and 24583 transitions. [2020-10-12 19:25:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:25:09,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2020-10-12 19:25:09,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:09,647 INFO L225 Difference]: With dead ends: 15072 [2020-10-12 19:25:09,647 INFO L226 Difference]: Without dead ends: 10203 [2020-10-12 19:25:09,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:25:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10203 states. [2020-10-12 19:25:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10203 to 10082. [2020-10-12 19:25:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10082 states. [2020-10-12 19:25:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10082 states to 10082 states and 16409 transitions. [2020-10-12 19:25:10,144 INFO L78 Accepts]: Start accepts. Automaton has 10082 states and 16409 transitions. Word has length 470 [2020-10-12 19:25:10,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:10,145 INFO L479 AbstractCegarLoop]: Abstraction has 10082 states and 16409 transitions. [2020-10-12 19:25:10,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 10082 states and 16409 transitions. [2020-10-12 19:25:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-12 19:25:10,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:10,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:10,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:25:10,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:10,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:10,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1711491662, now seen corresponding path program 1 times [2020-10-12 19:25:10,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:10,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967478762] [2020-10-12 19:25:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:13,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:14,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:15,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:15,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-12 19:25:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:25:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 19:25:15,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:25:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:25:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 19:25:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:16,177 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 19:25:16,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:16,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:16,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:16,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:25:16,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:25:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:16,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967478762] [2020-10-12 19:25:16,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:16,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:25:16,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760174972] [2020-10-12 19:25:16,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:25:16,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:16,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:25:16,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:25:16,907 INFO L87 Difference]: Start difference. First operand 10082 states and 16409 transitions. Second operand 5 states. [2020-10-12 19:25:31,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:31,565 INFO L93 Difference]: Finished difference Result 29794 states and 48456 transitions. [2020-10-12 19:25:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:25:31,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 472 [2020-10-12 19:25:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:31,627 INFO L225 Difference]: With dead ends: 29794 [2020-10-12 19:25:31,627 INFO L226 Difference]: Without dead ends: 19871 [2020-10-12 19:25:31,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:25:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19871 states. [2020-10-12 19:25:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19871 to 19750. [2020-10-12 19:25:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19750 states. [2020-10-12 19:25:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19750 states to 19750 states and 31971 transitions. [2020-10-12 19:25:32,366 INFO L78 Accepts]: Start accepts. Automaton has 19750 states and 31971 transitions. Word has length 472 [2020-10-12 19:25:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:32,366 INFO L479 AbstractCegarLoop]: Abstraction has 19750 states and 31971 transitions. [2020-10-12 19:25:32,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 19750 states and 31971 transitions. [2020-10-12 19:25:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-12 19:25:32,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:32,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:32,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:25:32,414 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:32,415 INFO L82 PathProgramCache]: Analyzing trace with hash 282971143, now seen corresponding path program 1 times [2020-10-12 19:25:32,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:32,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850148095] [2020-10-12 19:25:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:32,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:35,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:35,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:36,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:37,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:37,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-12 19:25:37,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:38,465 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 19:25:38,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:38,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:38,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:38,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:25:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:38,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850148095] [2020-10-12 19:25:38,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:38,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:25:38,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901043935] [2020-10-12 19:25:38,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:25:38,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:25:38,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:25:38,840 INFO L87 Difference]: Start difference. First operand 19750 states and 31971 transitions. Second operand 5 states. [2020-10-12 19:25:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:55,139 INFO L93 Difference]: Finished difference Result 58822 states and 95212 transitions. [2020-10-12 19:25:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:25:55,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2020-10-12 19:25:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:55,224 INFO L225 Difference]: With dead ends: 58822 [2020-10-12 19:25:55,225 INFO L226 Difference]: Without dead ends: 39102 [2020-10-12 19:25:55,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:25:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39102 states. [2020-10-12 19:25:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39102 to 39082. [2020-10-12 19:25:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39082 states. [2020-10-12 19:25:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39082 states to 39082 states and 63005 transitions. [2020-10-12 19:25:58,196 INFO L78 Accepts]: Start accepts. Automaton has 39082 states and 63005 transitions. Word has length 476 [2020-10-12 19:25:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:58,197 INFO L479 AbstractCegarLoop]: Abstraction has 39082 states and 63005 transitions. [2020-10-12 19:25:58,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 39082 states and 63005 transitions. [2020-10-12 19:25:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-12 19:25:58,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:58,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:58,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:25:58,268 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2131154237, now seen corresponding path program 1 times [2020-10-12 19:25:58,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:58,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949925161] [2020-10-12 19:25:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:03,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:03,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-12 19:26:03,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:26:03,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:26:03,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-12 19:26:03,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:04,417 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 19:26:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:04,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:04,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:04,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:04,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:26:04,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:04,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949925161] [2020-10-12 19:26:04,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:04,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:04,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874431939] [2020-10-12 19:26:04,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:04,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:04,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:04,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:04,727 INFO L87 Difference]: Start difference. First operand 39082 states and 63005 transitions. Second operand 5 states. [2020-10-12 19:26:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:24,676 INFO L93 Difference]: Finished difference Result 113832 states and 183103 transitions. [2020-10-12 19:26:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:24,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 478 [2020-10-12 19:26:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:24,790 INFO L225 Difference]: With dead ends: 113832 [2020-10-12 19:26:24,790 INFO L226 Difference]: Without dead ends: 76683 [2020-10-12 19:26:24,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:26:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76683 states. [2020-10-12 19:26:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76683 to 76462. [2020-10-12 19:26:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76462 states. [2020-10-12 19:26:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76462 states to 76462 states and 122657 transitions. [2020-10-12 19:26:30,431 INFO L78 Accepts]: Start accepts. Automaton has 76462 states and 122657 transitions. Word has length 478 [2020-10-12 19:26:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:30,432 INFO L479 AbstractCegarLoop]: Abstraction has 76462 states and 122657 transitions. [2020-10-12 19:26:30,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:26:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 76462 states and 122657 transitions. [2020-10-12 19:26:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-12 19:26:30,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:30,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:26:30,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:26:30,522 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:30,523 INFO L82 PathProgramCache]: Analyzing trace with hash -505098872, now seen corresponding path program 1 times [2020-10-12 19:26:30,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:30,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266411535] [2020-10-12 19:26:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:30,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:30,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:30,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:35,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:35,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-12 19:26:35,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:26:35,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-12 19:26:35,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 19:26:35,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:36,531 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 19:26:36,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:36,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:36,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:36,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:26:36,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:36,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266411535] [2020-10-12 19:26:36,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:36,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:36,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610070043] [2020-10-12 19:26:36,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:36,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:36,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:36,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:36,730 INFO L87 Difference]: Start difference. First operand 76462 states and 122657 transitions. Second operand 5 states. [2020-10-12 19:26:58,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:58,909 INFO L93 Difference]: Finished difference Result 225709 states and 361722 transitions. [2020-10-12 19:26:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:58,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 481 [2020-10-12 19:26:58,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:59,113 INFO L225 Difference]: With dead ends: 225709 [2020-10-12 19:26:59,113 INFO L226 Difference]: Without dead ends: 150394 [2020-10-12 19:26:59,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:26:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150394 states. [2020-10-12 19:27:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150394 to 77875. [2020-10-12 19:27:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77875 states. [2020-10-12 19:27:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77875 states to 77875 states and 124888 transitions. [2020-10-12 19:27:04,107 INFO L78 Accepts]: Start accepts. Automaton has 77875 states and 124888 transitions. Word has length 481 [2020-10-12 19:27:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:27:04,107 INFO L479 AbstractCegarLoop]: Abstraction has 77875 states and 124888 transitions. [2020-10-12 19:27:04,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:27:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 77875 states and 124888 transitions. [2020-10-12 19:27:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-12 19:27:04,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:27:04,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:27:04,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:27:04,188 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:27:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:27:04,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1043223790, now seen corresponding path program 1 times [2020-10-12 19:27:04,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:27:04,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866288419] [2020-10-12 19:27:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:27:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-12 19:27:09,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:27:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:27:09,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:27:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 19:27:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:27:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:10,280 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 19:27:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:10,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:10,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:27:10,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:27:10,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866288419] [2020-10-12 19:27:10,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:10,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:27:10,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846116570] [2020-10-12 19:27:10,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:27:10,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:10,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:27:10,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:27:10,469 INFO L87 Difference]: Start difference. First operand 77875 states and 124888 transitions. Second operand 5 states.