/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_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:23:15,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:23:15,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:23:15,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:23:15,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:23:15,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:23:15,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:23:15,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:23:15,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:23:15,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:23:15,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:23:15,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:23:15,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:23:15,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:23:15,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:23:15,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:23:15,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:23:15,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:23:15,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:23:15,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:23:15,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:23:15,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:23:15,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:23:15,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:23:15,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:23:15,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:23:15,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:23:15,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:23:15,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:23:15,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:23:15,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:23:15,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:23:15,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:23:15,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:23:15,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:23:15,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:23:15,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:23:15,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:23:15,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:23:15,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:23:15,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:23:15,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:23:15,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:23:15,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:23:15,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:23:15,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:23:15,417 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:23:15,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:23:15,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:23:15,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:23:15,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:23:15,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:23:15,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:23:15,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:23:15,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:23:15,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:23:15,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:23:15,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:23:15,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:23:15,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:23:15,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:23:15,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:23:15,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:23:15,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:23:15,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:23:15,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:23:15,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:23:15,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:23:15,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:23:15,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:23:15,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:23:15,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:23:15,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:23:15,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:23:15,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:23:15,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:23:15,727 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:23:15,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:23:15,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f171b9097/24a82e26966b4bd0928fa01080f899b9/FLAG3575fbb47 [2020-10-12 20:23:16,393 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:23:16,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:23:16,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f171b9097/24a82e26966b4bd0928fa01080f899b9/FLAG3575fbb47 [2020-10-12 20:23:16,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f171b9097/24a82e26966b4bd0928fa01080f899b9 [2020-10-12 20:23:16,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:23:16,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:23:16,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:23:16,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:23:16,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:23:16,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:23:16" (1/1) ... [2020-10-12 20:23:16,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592fd428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:16, skipping insertion in model container [2020-10-12 20:23:16,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:23:16" (1/1) ... [2020-10-12 20:23:16,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:23:16,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:23:17,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:23:17,530 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:23:18,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:23:18,117 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:23:18,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18 WrapperNode [2020-10-12 20:23:18,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:23:18,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:23:18,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:23:18,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:23:18,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (1/1) ... [2020-10-12 20:23:18,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (1/1) ... [2020-10-12 20:23:18,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (1/1) ... [2020-10-12 20:23:18,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (1/1) ... [2020-10-12 20:23:18,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (1/1) ... [2020-10-12 20:23:18,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (1/1) ... [2020-10-12 20:23:18,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (1/1) ... [2020-10-12 20:23:18,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:23:18,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:23:18,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:23:18,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:23:18,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:23:18,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:23:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:23:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:23:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:23:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:23:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:23:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:23:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:23:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:23:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:23:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:23:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:23:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:23:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:23:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:23:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:23:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:23:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:23:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:23:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:23:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:23:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:23:20,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:23:20,288 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:23:20,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:23:20 BoogieIcfgContainer [2020-10-12 20:23:20,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:23:20,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:23:20,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:23:20,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:23:20,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:23:16" (1/3) ... [2020-10-12 20:23:20,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f68d73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:23:20, skipping insertion in model container [2020-10-12 20:23:20,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:18" (2/3) ... [2020-10-12 20:23:20,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f68d73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:23:20, skipping insertion in model container [2020-10-12 20:23:20,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:23:20" (3/3) ... [2020-10-12 20:23:20,306 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:23:20,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:23:20,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:23:20,352 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:23:20,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:23:20,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:23:20,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:23:20,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:23:20,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:23:20,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:23:20,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:23:20,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:23:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states. [2020-10-12 20:23:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 20:23:20,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:20,473 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] [2020-10-12 20:23:20,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash -331581758, now seen corresponding path program 1 times [2020-10-12 20:23:20,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:20,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661035956] [2020-10-12 20:23:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:26,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 20:23:26,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:23:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:23:26,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 20:23:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:23:27,295 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:23:27,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:27,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:27,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:23:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:23:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:27,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661035956] [2020-10-12 20:23:27,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:27,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:27,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064108125] [2020-10-12 20:23:27,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:27,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:27,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:27,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:27,621 INFO L87 Difference]: Start difference. First operand 652 states. Second operand 5 states. [2020-10-12 20:23:34,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:34,061 INFO L93 Difference]: Finished difference Result 1876 states and 3329 transitions. [2020-10-12 20:23:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:23:34,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-12 20:23:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:34,091 INFO L225 Difference]: With dead ends: 1876 [2020-10-12 20:23:34,091 INFO L226 Difference]: Without dead ends: 1261 [2020-10-12 20:23:34,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2020-10-12 20:23:34,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1259. [2020-10-12 20:23:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-10-12 20:23:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1967 transitions. [2020-10-12 20:23:34,248 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1967 transitions. Word has length 254 [2020-10-12 20:23:34,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:34,249 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1967 transitions. [2020-10-12 20:23:34,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1967 transitions. [2020-10-12 20:23:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-12 20:23:34,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:34,255 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] [2020-10-12 20:23:34,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:23:34,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:34,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:34,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1341724837, now seen corresponding path program 1 times [2020-10-12 20:23:34,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:34,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975810128] [2020-10-12 20:23:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:35,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:35,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:39,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-12 20:23:39,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:23:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:23:39,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 20:23:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:40,130 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:23:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:40,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:40,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:40,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:23:40,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:40,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:23:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:40,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975810128] [2020-10-12 20:23:40,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:40,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:40,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739495601] [2020-10-12 20:23:40,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:40,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:40,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:40,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:40,329 INFO L87 Difference]: Start difference. First operand 1259 states and 1967 transitions. Second operand 5 states. [2020-10-12 20:23:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:45,408 INFO L93 Difference]: Finished difference Result 3675 states and 5730 transitions. [2020-10-12 20:23:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:45,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-12 20:23:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:45,424 INFO L225 Difference]: With dead ends: 3675 [2020-10-12 20:23:45,425 INFO L226 Difference]: Without dead ends: 2431 [2020-10-12 20:23:45,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2020-10-12 20:23:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2429. [2020-10-12 20:23:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2429 states. [2020-10-12 20:23:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3760 transitions. [2020-10-12 20:23:45,541 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3760 transitions. Word has length 256 [2020-10-12 20:23:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:45,542 INFO L479 AbstractCegarLoop]: Abstraction has 2429 states and 3760 transitions. [2020-10-12 20:23:45,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3760 transitions. [2020-10-12 20:23:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 20:23:45,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:45,550 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] [2020-10-12 20:23:45,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:23:45,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:45,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1065617210, now seen corresponding path program 1 times [2020-10-12 20:23:45,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:45,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861648680] [2020-10-12 20:23:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:45,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:46,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:49,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:49,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:50,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:50,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-12 20:23:50,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:23:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 20:23:50,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:23:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:51,283 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:23:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:51,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:51,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:51,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:23:51,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:23:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:51,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861648680] [2020-10-12 20:23:51,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:51,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:51,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898726383] [2020-10-12 20:23:51,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:51,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:51,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:51,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:51,559 INFO L87 Difference]: Start difference. First operand 2429 states and 3760 transitions. Second operand 5 states. [2020-10-12 20:23:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:57,283 INFO L93 Difference]: Finished difference Result 7073 states and 10921 transitions. [2020-10-12 20:23:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:57,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-12 20:23:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:57,310 INFO L225 Difference]: With dead ends: 7073 [2020-10-12 20:23:57,311 INFO L226 Difference]: Without dead ends: 4714 [2020-10-12 20:23:57,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2020-10-12 20:23:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 4712. [2020-10-12 20:23:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4712 states. [2020-10-12 20:23:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 7232 transitions. [2020-10-12 20:23:57,515 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 7232 transitions. Word has length 258 [2020-10-12 20:23:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:57,517 INFO L479 AbstractCegarLoop]: Abstraction has 4712 states and 7232 transitions. [2020-10-12 20:23:57,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 7232 transitions. [2020-10-12 20:23:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 20:23:57,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:57,529 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] [2020-10-12 20:23:57,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:23:57,538 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash 910000235, now seen corresponding path program 1 times [2020-10-12 20:23:57,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:57,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481799167] [2020-10-12 20:23:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:58,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:58,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:58,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:59,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:59,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:02,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 20:24:02,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:24:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:24:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 20:24:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:03,140 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:24:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:03,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:03,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:03,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:03,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:24:03,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:03,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:03,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:03,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481799167] [2020-10-12 20:24:03,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:03,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:03,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534651257] [2020-10-12 20:24:03,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:03,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:03,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:03,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:03,368 INFO L87 Difference]: Start difference. First operand 4712 states and 7232 transitions. Second operand 5 states. [2020-10-12 20:24:08,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:08,508 INFO L93 Difference]: Finished difference Result 13864 states and 21246 transitions. [2020-10-12 20:24:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:08,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-12 20:24:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:08,550 INFO L225 Difference]: With dead ends: 13864 [2020-10-12 20:24:08,550 INFO L226 Difference]: Without dead ends: 9215 [2020-10-12 20:24:08,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9215 states. [2020-10-12 20:24:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9215 to 9213. [2020-10-12 20:24:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9213 states. [2020-10-12 20:24:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9213 states to 9213 states and 14030 transitions. [2020-10-12 20:24:08,910 INFO L78 Accepts]: Start accepts. Automaton has 9213 states and 14030 transitions. Word has length 260 [2020-10-12 20:24:08,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:08,911 INFO L479 AbstractCegarLoop]: Abstraction has 9213 states and 14030 transitions. [2020-10-12 20:24:08,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 9213 states and 14030 transitions. [2020-10-12 20:24:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 20:24:08,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:08,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:24:08,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:24:08,933 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:08,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:08,933 INFO L82 PathProgramCache]: Analyzing trace with hash 829951836, now seen corresponding path program 1 times [2020-10-12 20:24:08,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:08,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775786345] [2020-10-12 20:24:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:08,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:09,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:11,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:13,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:13,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-12 20:24:13,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:24:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:24:13,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:13,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 20:24:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:14,410 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:24:14,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:14,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:14,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:14,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:14,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:24:14,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:14,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775786345] [2020-10-12 20:24:14,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:14,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:14,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82540502] [2020-10-12 20:24:14,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:14,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:14,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:14,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:14,538 INFO L87 Difference]: Start difference. First operand 9213 states and 14030 transitions. Second operand 5 states. [2020-10-12 20:24:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:19,685 INFO L93 Difference]: Finished difference Result 26857 states and 40799 transitions. [2020-10-12 20:24:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:19,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-12 20:24:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:19,743 INFO L225 Difference]: With dead ends: 26857 [2020-10-12 20:24:19,743 INFO L226 Difference]: Without dead ends: 17905 [2020-10-12 20:24:19,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17905 states. [2020-10-12 20:24:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17905 to 17903. [2020-10-12 20:24:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17903 states. [2020-10-12 20:24:20,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17903 states to 17903 states and 27015 transitions. [2020-10-12 20:24:20,444 INFO L78 Accepts]: Start accepts. Automaton has 17903 states and 27015 transitions. Word has length 262 [2020-10-12 20:24:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:20,444 INFO L479 AbstractCegarLoop]: Abstraction has 17903 states and 27015 transitions. [2020-10-12 20:24:20,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 17903 states and 27015 transitions. [2020-10-12 20:24:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-12 20:24:20,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:20,480 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] [2020-10-12 20:24:20,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:24:20,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:20,481 INFO L82 PathProgramCache]: Analyzing trace with hash -555971774, now seen corresponding path program 1 times [2020-10-12 20:24:20,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:20,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065357357] [2020-10-12 20:24:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:22,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:25,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:25,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 20:24:25,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:24:25,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:24:25,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 20:24:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:25,992 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:24:25,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:26,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:26,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:26,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:24:26,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:26,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:26,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065357357] [2020-10-12 20:24:26,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:26,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:26,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446393720] [2020-10-12 20:24:26,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:26,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:26,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:26,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:26,105 INFO L87 Difference]: Start difference. First operand 17903 states and 27015 transitions. Second operand 5 states. [2020-10-12 20:24:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:31,827 INFO L93 Difference]: Finished difference Result 52967 states and 79825 transitions. [2020-10-12 20:24:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:31,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-12 20:24:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:31,898 INFO L225 Difference]: With dead ends: 52967 [2020-10-12 20:24:31,898 INFO L226 Difference]: Without dead ends: 35153 [2020-10-12 20:24:31,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2020-10-12 20:24:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35151. [2020-10-12 20:24:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35151 states. [2020-10-12 20:24:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35151 states to 35151 states and 52659 transitions. [2020-10-12 20:24:33,228 INFO L78 Accepts]: Start accepts. Automaton has 35151 states and 52659 transitions. Word has length 264 [2020-10-12 20:24:33,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:33,228 INFO L479 AbstractCegarLoop]: Abstraction has 35151 states and 52659 transitions. [2020-10-12 20:24:33,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:33,228 INFO L276 IsEmpty]: Start isEmpty. Operand 35151 states and 52659 transitions. [2020-10-12 20:24:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 20:24:33,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:33,277 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] [2020-10-12 20:24:33,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:24:33,277 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:33,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:33,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1113663151, now seen corresponding path program 1 times [2020-10-12 20:24:33,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:33,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013951765] [2020-10-12 20:24:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:33,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:33,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:36,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:36,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 20:24:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:24:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:24:38,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 20:24:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:38,864 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:24:38,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:38,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:38,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:38,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:24:38,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:39,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013951765] [2020-10-12 20:24:39,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:39,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:39,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741096438] [2020-10-12 20:24:39,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:39,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:39,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:39,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:39,005 INFO L87 Difference]: Start difference. First operand 35151 states and 52659 transitions. Second operand 5 states. [2020-10-12 20:24:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:47,201 INFO L93 Difference]: Finished difference Result 101100 states and 150699 transitions. [2020-10-12 20:24:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:47,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-12 20:24:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:47,373 INFO L225 Difference]: With dead ends: 101100 [2020-10-12 20:24:47,373 INFO L226 Difference]: Without dead ends: 68760 [2020-10-12 20:24:47,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68760 states. [2020-10-12 20:24:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68760 to 68758. [2020-10-12 20:24:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68758 states. [2020-10-12 20:24:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68758 states to 68758 states and 102256 transitions. [2020-10-12 20:24:51,749 INFO L78 Accepts]: Start accepts. Automaton has 68758 states and 102256 transitions. Word has length 266 [2020-10-12 20:24:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:51,750 INFO L479 AbstractCegarLoop]: Abstraction has 68758 states and 102256 transitions. [2020-10-12 20:24:51,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 68758 states and 102256 transitions. [2020-10-12 20:24:51,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-12 20:24:51,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:51,811 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] [2020-10-12 20:24:51,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:24:51,812 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:51,812 INFO L82 PathProgramCache]: Analyzing trace with hash 97282762, now seen corresponding path program 1 times [2020-10-12 20:24:51,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:51,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302410713] [2020-10-12 20:24:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:56,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 20:24:56,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:24:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:24:56,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 20:24:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:57,368 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:24:57,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:57,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:57,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:24:57,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:57,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302410713] [2020-10-12 20:24:57,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:57,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:57,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279074498] [2020-10-12 20:24:57,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:57,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:57,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:57,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:57,488 INFO L87 Difference]: Start difference. First operand 68758 states and 102256 transitions. Second operand 5 states. [2020-10-12 20:25:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:09,839 INFO L93 Difference]: Finished difference Result 201523 states and 299003 transitions. [2020-10-12 20:25:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:09,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-12 20:25:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:10,078 INFO L225 Difference]: With dead ends: 201523 [2020-10-12 20:25:10,078 INFO L226 Difference]: Without dead ends: 135041 [2020-10-12 20:25:10,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135041 states. [2020-10-12 20:25:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135041 to 135039. [2020-10-12 20:25:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135039 states. [2020-10-12 20:25:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135039 states to 135039 states and 199217 transitions. [2020-10-12 20:25:18,608 INFO L78 Accepts]: Start accepts. Automaton has 135039 states and 199217 transitions. Word has length 268 [2020-10-12 20:25:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:18,608 INFO L479 AbstractCegarLoop]: Abstraction has 135039 states and 199217 transitions. [2020-10-12 20:25:18,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 135039 states and 199217 transitions. [2020-10-12 20:25:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-12 20:25:18,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:18,707 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] [2020-10-12 20:25:18,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:25:18,708 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash -166448899, now seen corresponding path program 1 times [2020-10-12 20:25:18,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:18,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203464327] [2020-10-12 20:25:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:18,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:24,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:24,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 20:25:24,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:25:24,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6242 [2020-10-12 20:25:24,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:25:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:25:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:25,463 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:25:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:25,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:25,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:25:25,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:25:25,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203464327] [2020-10-12 20:25:25,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:25,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:25,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499038533] [2020-10-12 20:25:25,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:25,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:25,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:25,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:25,549 INFO L87 Difference]: Start difference. First operand 135039 states and 199217 transitions. Second operand 5 states. [2020-10-12 20:25:43,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:43,750 INFO L93 Difference]: Finished difference Result 367466 states and 539411 transitions. [2020-10-12 20:25:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:43,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-12 20:25:43,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:44,017 INFO L225 Difference]: With dead ends: 367466 [2020-10-12 20:25:44,017 INFO L226 Difference]: Without dead ends: 242504 [2020-10-12 20:25:44,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242504 states. [2020-10-12 20:25:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242504 to 141590. [2020-10-12 20:25:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141590 states. [2020-10-12 20:25:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141590 states to 141590 states and 209201 transitions. [2020-10-12 20:25:56,163 INFO L78 Accepts]: Start accepts. Automaton has 141590 states and 209201 transitions. Word has length 270 [2020-10-12 20:25:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:56,163 INFO L479 AbstractCegarLoop]: Abstraction has 141590 states and 209201 transitions. [2020-10-12 20:25:56,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:56,163 INFO L276 IsEmpty]: Start isEmpty. Operand 141590 states and 209201 transitions. [2020-10-12 20:25:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-12 20:25:56,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:56,258 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] [2020-10-12 20:25:56,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:25:56,258 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -311606387, now seen corresponding path program 1 times [2020-10-12 20:25:56,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:56,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188958229] [2020-10-12 20:25:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:56,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:01,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:01,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-12 20:26:01,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:26:01,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:26:01,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:26:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:26:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:26:01,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:03,662 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:26:03,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:03,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:03,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:03,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:26:03,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:03,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:26:03,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188958229] [2020-10-12 20:26:03,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:03,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:03,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662150636] [2020-10-12 20:26:03,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:03,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:03,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:03,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:03,751 INFO L87 Difference]: Start difference. First operand 141590 states and 209201 transitions. Second operand 5 states. [2020-10-12 20:26:22,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:22,432 INFO L93 Difference]: Finished difference Result 372178 states and 545373 transitions. [2020-10-12 20:26:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:26:22,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-12 20:26:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:22,722 INFO L225 Difference]: With dead ends: 372178 [2020-10-12 20:26:22,723 INFO L226 Difference]: Without dead ends: 255696 [2020-10-12 20:26:22,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:26:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255696 states. [2020-10-12 20:26:37,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255696 to 161982. [2020-10-12 20:26:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161982 states. [2020-10-12 20:26:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161982 states to 161982 states and 242259 transitions. [2020-10-12 20:26:37,552 INFO L78 Accepts]: Start accepts. Automaton has 161982 states and 242259 transitions. Word has length 272 [2020-10-12 20:26:37,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:37,552 INFO L479 AbstractCegarLoop]: Abstraction has 161982 states and 242259 transitions. [2020-10-12 20:26:37,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:26:37,552 INFO L276 IsEmpty]: Start isEmpty. Operand 161982 states and 242259 transitions. [2020-10-12 20:26:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-12 20:26:37,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:37,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:26:37,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:26:37,662 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:37,662 INFO L82 PathProgramCache]: Analyzing trace with hash -455289398, now seen corresponding path program 1 times [2020-10-12 20:26:37,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:37,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041467614] [2020-10-12 20:26:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:38,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:39,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:42,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:42,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-12 20:26:42,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:26:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:26:42,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:26:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 20:26:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:26:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:43,173 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:26:43,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:43,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:43,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:43,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:26:43,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:26:43,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041467614] [2020-10-12 20:26:43,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:43,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:43,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245128569] [2020-10-12 20:26:43,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:43,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:43,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:43,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:43,258 INFO L87 Difference]: Start difference. First operand 161982 states and 242259 transitions. Second operand 5 states.