/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.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:31:27,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:31:27,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:31:27,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:31:27,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:31:27,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:31:27,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:31:27,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:31:27,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:31:27,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:31:27,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:31:27,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:31:27,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:31:27,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:31:27,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:31:27,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:31:27,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:31:27,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:31:27,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:31:27,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:31:27,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:31:27,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:31:27,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:31:27,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:31:27,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:31:27,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:31:27,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:31:27,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:31:27,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:31:27,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:31:27,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:31:27,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:31:27,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:31:27,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:31:27,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:31:27,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:31:27,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:31:27,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:31:27,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:31:27,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:31:27,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:31:27,363 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 20:31:27,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:31:27,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:31:27,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:31:27,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:31:27,386 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:31:27,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:31:27,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:31:27,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:31:27,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:31:27,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:31:27,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:31:27,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:31:27,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:31:27,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:31:27,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:31:27,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:31:27,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:31:27,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:31:27,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:31:27,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:31:27,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:31:27,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:31:27,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:31:27,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:31:27,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:31:27,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:31:27,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:31:27,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:31:27,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:31:27,391 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 20:31:27,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:31:27,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:31:27,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:31:27,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:31:27,700 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:31:27,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:31:27,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/532bc4aa8/c2810d73fed7463fa92c348aea2e3856/FLAG5bfb61298 [2020-10-12 20:31:28,374 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:31:28,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:31:28,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/532bc4aa8/c2810d73fed7463fa92c348aea2e3856/FLAG5bfb61298 [2020-10-12 20:31:28,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/532bc4aa8/c2810d73fed7463fa92c348aea2e3856 [2020-10-12 20:31:28,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:31:28,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:31:28,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:31:28,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:31:28,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:31:28,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:31:28" (1/1) ... [2020-10-12 20:31:28,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335959a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:28, skipping insertion in model container [2020-10-12 20:31:28,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:31:28" (1/1) ... [2020-10-12 20:31:28,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:31:28,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:31:30,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:31:30,072 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:31:30,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:31:31,011 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:31:31,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31 WrapperNode [2020-10-12 20:31:31,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:31:31,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:31:31,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:31:31,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:31:31,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (1/1) ... [2020-10-12 20:31:31,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (1/1) ... [2020-10-12 20:31:31,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (1/1) ... [2020-10-12 20:31:31,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (1/1) ... [2020-10-12 20:31:31,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (1/1) ... [2020-10-12 20:31:31,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (1/1) ... [2020-10-12 20:31:31,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (1/1) ... [2020-10-12 20:31:31,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:31:31,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:31:31,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:31:31,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:31:31,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (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 20:31:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:31:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:31:31,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:31:31,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:31:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:31:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:31:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:31:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:31:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:31:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:31:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:31:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:31:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:31:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:31:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:31:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:31:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:31:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:31:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:31:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:31:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:31:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:31:35,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:31:35,278 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:31:35,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:31:35 BoogieIcfgContainer [2020-10-12 20:31:35,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:31:35,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:31:35,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:31:35,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:31:35,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:31:28" (1/3) ... [2020-10-12 20:31:35,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d236704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:31:35, skipping insertion in model container [2020-10-12 20:31:35,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:31" (2/3) ... [2020-10-12 20:31:35,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d236704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:31:35, skipping insertion in model container [2020-10-12 20:31:35,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:31:35" (3/3) ... [2020-10-12 20:31:35,298 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:31:35,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:31:35,318 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:31:35,333 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:31:35,366 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:31:35,366 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:31:35,366 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:31:35,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:31:35,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:31:35,367 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:31:35,367 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:31:35,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:31:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states. [2020-10-12 20:31:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-12 20:31:35,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:31:35,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:31:35,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:31:35,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:31:35,457 INFO L82 PathProgramCache]: Analyzing trace with hash -313895885, now seen corresponding path program 1 times [2020-10-12 20:31:35,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:31:35,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897894417] [2020-10-12 20:31:35,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:31:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:31:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:37,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:41,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:31:41,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-12 20:31:41,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:31:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-12 20:31:41,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:31:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:31:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:31:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-12 20:31:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:31:42,732 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:31:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:31:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:31:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:42,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:31:42,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:31:42,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:31:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:31:42,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:31:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:31:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:31:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:31:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:31:43,474 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 20:31:43,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897894417] [2020-10-12 20:31:43,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:31:43,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:31:43,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965862790] [2020-10-12 20:31:43,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:31:43,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:31:43,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:31:43,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:31:43,512 INFO L87 Difference]: Start difference. First operand 1549 states. Second operand 5 states. [2020-10-12 20:31:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:31:56,596 INFO L93 Difference]: Finished difference Result 4496 states and 7982 transitions. [2020-10-12 20:31:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:31:56,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-10-12 20:31:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:31:56,647 INFO L225 Difference]: With dead ends: 4496 [2020-10-12 20:31:56,647 INFO L226 Difference]: Without dead ends: 3012 [2020-10-12 20:31:56,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:31:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2020-10-12 20:31:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 3010. [2020-10-12 20:31:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3010 states. [2020-10-12 20:31:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 5050 transitions. [2020-10-12 20:31:57,005 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 5050 transitions. Word has length 391 [2020-10-12 20:31:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:31:57,010 INFO L479 AbstractCegarLoop]: Abstraction has 3010 states and 5050 transitions. [2020-10-12 20:31:57,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:31:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 5050 transitions. [2020-10-12 20:31:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-12 20:31:57,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:31:57,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:31:57,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:31:57,042 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:31:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:31:57,042 INFO L82 PathProgramCache]: Analyzing trace with hash -348122981, now seen corresponding path program 1 times [2020-10-12 20:31:57,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:31:57,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50820576] [2020-10-12 20:31:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:31:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:31:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:00,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:01,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:02,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:02,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-12 20:32:02,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:32:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-12 20:32:02,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:32:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:32:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 20:32:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:32:03,489 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:32:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:32:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:03,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:03,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:32:03,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:32:03,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:32:03,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:32:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:32:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:32:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:32:04,282 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 20:32:04,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50820576] [2020-10-12 20:32:04,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:32:04,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:32:04,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091875499] [2020-10-12 20:32:04,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:32:04,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:32:04,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:32:04,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:32:04,290 INFO L87 Difference]: Start difference. First operand 3010 states and 5050 transitions. Second operand 5 states. [2020-10-12 20:32:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:32:16,953 INFO L93 Difference]: Finished difference Result 8837 states and 14810 transitions. [2020-10-12 20:32:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:32:16,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-10-12 20:32:16,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:32:16,986 INFO L225 Difference]: With dead ends: 8837 [2020-10-12 20:32:16,986 INFO L226 Difference]: Without dead ends: 5925 [2020-10-12 20:32:16,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:32:17,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2020-10-12 20:32:17,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5923. [2020-10-12 20:32:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5923 states. [2020-10-12 20:32:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5923 states to 5923 states and 9892 transitions. [2020-10-12 20:32:17,277 INFO L78 Accepts]: Start accepts. Automaton has 5923 states and 9892 transitions. Word has length 391 [2020-10-12 20:32:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:32:17,279 INFO L479 AbstractCegarLoop]: Abstraction has 5923 states and 9892 transitions. [2020-10-12 20:32:17,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:32:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5923 states and 9892 transitions. [2020-10-12 20:32:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-12 20:32:17,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:32:17,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:32:17,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:32:17,299 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:32:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:32:17,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1035392371, now seen corresponding path program 1 times [2020-10-12 20:32:17,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:32:17,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125421262] [2020-10-12 20:32:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:32:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:18,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:18,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:20,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:22,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:22,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-12 20:32:22,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:32:22,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-12 20:32:22,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:32:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:32:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-12 20:32:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:32:23,686 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:32:23,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:32:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:23,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:23,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:32:23,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:32:23,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:32:23,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:32:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:32:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:32:23,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:32:24,130 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 20:32:24,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125421262] [2020-10-12 20:32:24,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:32:24,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:32:24,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045574548] [2020-10-12 20:32:24,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:32:24,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:32:24,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:32:24,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:32:24,133 INFO L87 Difference]: Start difference. First operand 5923 states and 9892 transitions. Second operand 5 states. [2020-10-12 20:32:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:32:35,821 INFO L93 Difference]: Finished difference Result 17333 states and 28905 transitions. [2020-10-12 20:32:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:32:35,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2020-10-12 20:32:35,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:32:35,879 INFO L225 Difference]: With dead ends: 17333 [2020-10-12 20:32:35,879 INFO L226 Difference]: Without dead ends: 11632 [2020-10-12 20:32:35,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:32:35,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11632 states. [2020-10-12 20:32:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11632 to 11630. [2020-10-12 20:32:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11630 states. [2020-10-12 20:32:36,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11630 states to 11630 states and 19341 transitions. [2020-10-12 20:32:36,608 INFO L78 Accepts]: Start accepts. Automaton has 11630 states and 19341 transitions. Word has length 393 [2020-10-12 20:32:36,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:32:36,613 INFO L479 AbstractCegarLoop]: Abstraction has 11630 states and 19341 transitions. [2020-10-12 20:32:36,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:32:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 11630 states and 19341 transitions. [2020-10-12 20:32:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-12 20:32:36,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:32:36,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:32:36,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:32:36,646 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:32:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:32:36,646 INFO L82 PathProgramCache]: Analyzing trace with hash -682034241, now seen corresponding path program 1 times [2020-10-12 20:32:36,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:32:36,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106899310] [2020-10-12 20:32:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:32:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:37,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:37,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:37,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:41,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:41,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-12 20:32:41,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:32:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 20:32:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:32:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:32:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-12 20:32:41,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:32:42,788 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:32:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:32:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:42,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:32:42,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:32:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:32:42,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:32:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:32:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:32:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:32:43,131 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 20:32:43,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106899310] [2020-10-12 20:32:43,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:32:43,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:32:43,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452657253] [2020-10-12 20:32:43,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:32:43,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:32:43,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:32:43,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:32:43,134 INFO L87 Difference]: Start difference. First operand 11630 states and 19341 transitions. Second operand 5 states. [2020-10-12 20:32:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:32:55,369 INFO L93 Difference]: Finished difference Result 34002 states and 56444 transitions. [2020-10-12 20:32:55,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:32:55,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 395 [2020-10-12 20:32:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:32:55,427 INFO L225 Difference]: With dead ends: 34002 [2020-10-12 20:32:55,427 INFO L226 Difference]: Without dead ends: 22872 [2020-10-12 20:32:55,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:32:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22872 states. [2020-10-12 20:32:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22872 to 22870. [2020-10-12 20:32:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22870 states. [2020-10-12 20:32:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22870 states to 22870 states and 37862 transitions. [2020-10-12 20:32:57,768 INFO L78 Accepts]: Start accepts. Automaton has 22870 states and 37862 transitions. Word has length 395 [2020-10-12 20:32:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:32:57,769 INFO L479 AbstractCegarLoop]: Abstraction has 22870 states and 37862 transitions. [2020-10-12 20:32:57,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:32:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22870 states and 37862 transitions. [2020-10-12 20:32:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-12 20:32:57,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:32:57,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:32:57,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:32:57,823 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:32:57,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:32:57,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1890463150, now seen corresponding path program 1 times [2020-10-12 20:32:57,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:32:57,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700149037] [2020-10-12 20:32:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:32:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:02,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:03,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:33:03,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-12 20:33:03,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:33:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5158 [2020-10-12 20:33:03,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:33:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:33:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:33:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-12 20:33:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:33:04,060 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:33:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:33:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:33:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:04,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:33:04,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:33:04,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:33:04,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:33:04,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:33:04,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:33:04,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:33:04,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:33:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:33:04,316 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 20:33:04,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700149037] [2020-10-12 20:33:04,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:33:04,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:33:04,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974928337] [2020-10-12 20:33:04,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:33:04,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:33:04,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:33:04,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:33:04,318 INFO L87 Difference]: Start difference. First operand 22870 states and 37862 transitions. Second operand 5 states. [2020-10-12 20:33:20,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:33:20,485 INFO L93 Difference]: Finished difference Result 67871 states and 112326 transitions. [2020-10-12 20:33:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:33:20,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 395 [2020-10-12 20:33:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:33:20,569 INFO L225 Difference]: With dead ends: 67871 [2020-10-12 20:33:20,570 INFO L226 Difference]: Without dead ends: 45171 [2020-10-12 20:33:20,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:33:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45171 states. [2020-10-12 20:33:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45171 to 45169. [2020-10-12 20:33:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45169 states. [2020-10-12 20:33:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45169 states to 45169 states and 74488 transitions. [2020-10-12 20:33:23,737 INFO L78 Accepts]: Start accepts. Automaton has 45169 states and 74488 transitions. Word has length 395 [2020-10-12 20:33:23,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:33:23,738 INFO L479 AbstractCegarLoop]: Abstraction has 45169 states and 74488 transitions. [2020-10-12 20:33:23,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:33:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 45169 states and 74488 transitions. [2020-10-12 20:33:23,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-12 20:33:23,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:33:23,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:23,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:33:23,803 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:33:23,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:33:23,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1853353619, now seen corresponding path program 1 times [2020-10-12 20:33:23,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:33:23,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090242561] [2020-10-12 20:33:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:33:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:33:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:24,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:28,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:28,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:28,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:33:28,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-12 20:33:28,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 20:33:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 20:33:28,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:33:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:33:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:33:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-12 20:33:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:33:29,753 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:33:29,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:33:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:33:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:33:30,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:33:30,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:33:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-12 20:33:30,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:33:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:33:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:33:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:33:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:33:30,252 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 20:33:30,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090242561] [2020-10-12 20:33:30,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:33:30,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:33:30,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528961590] [2020-10-12 20:33:30,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:33:30,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:33:30,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:33:30,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:33:30,255 INFO L87 Difference]: Start difference. First operand 45169 states and 74488 transitions. Second operand 5 states. [2020-10-12 20:33:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:33:55,102 INFO L93 Difference]: Finished difference Result 133043 states and 219150 transitions. [2020-10-12 20:33:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:33:55,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 398 [2020-10-12 20:33:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:33:55,260 INFO L225 Difference]: With dead ends: 133043 [2020-10-12 20:33:55,260 INFO L226 Difference]: Without dead ends: 89205 [2020-10-12 20:33:55,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:33:55,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89205 states. [2020-10-12 20:34:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89205 to 89203. [2020-10-12 20:34:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89203 states. [2020-10-12 20:34:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89203 states to 89203 states and 146498 transitions. [2020-10-12 20:34:00,954 INFO L78 Accepts]: Start accepts. Automaton has 89203 states and 146498 transitions. Word has length 398 [2020-10-12 20:34:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:34:00,954 INFO L479 AbstractCegarLoop]: Abstraction has 89203 states and 146498 transitions. [2020-10-12 20:34:00,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:34:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 89203 states and 146498 transitions. [2020-10-12 20:34:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-12 20:34:01,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:34:01,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:34:01,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:34:01,044 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:34:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:34:01,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2052578734, now seen corresponding path program 1 times [2020-10-12 20:34:01,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:34:01,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616555085] [2020-10-12 20:34:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:34:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:34:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:02,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:02,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:05,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:06,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:34:06,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-12 20:34:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:34:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-12 20:34:06,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:34:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:34:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:34:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-12 20:34:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:34:07,036 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:34:07,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:34:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:34:07,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:07,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:34:07,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:34:07,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:34:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:34:07,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:34:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:34:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:34:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:34:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:34:07,243 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 20:34:07,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616555085] [2020-10-12 20:34:07,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:34:07,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:34:07,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728556498] [2020-10-12 20:34:07,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:34:07,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:34:07,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:34:07,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:34:07,246 INFO L87 Difference]: Start difference. First operand 89203 states and 146498 transitions. Second operand 5 states. [2020-10-12 20:34:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:34:33,153 INFO L93 Difference]: Finished difference Result 262960 states and 431431 transitions. [2020-10-12 20:34:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:34:33,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 400 [2020-10-12 20:34:33,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:34:33,487 INFO L225 Difference]: With dead ends: 262960 [2020-10-12 20:34:33,487 INFO L226 Difference]: Without dead ends: 176430 [2020-10-12 20:34:33,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:34:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176430 states. [2020-10-12 20:34:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176430 to 176428. [2020-10-12 20:34:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176428 states. [2020-10-12 20:34:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176428 states to 176428 states and 288525 transitions. [2020-10-12 20:34:50,289 INFO L78 Accepts]: Start accepts. Automaton has 176428 states and 288525 transitions. Word has length 400 [2020-10-12 20:34:50,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:34:50,290 INFO L479 AbstractCegarLoop]: Abstraction has 176428 states and 288525 transitions. [2020-10-12 20:34:50,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:34:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 176428 states and 288525 transitions. [2020-10-12 20:34:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-12 20:34:50,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:34:50,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:34:50,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:34:50,435 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:34:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:34:50,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1720996039, now seen corresponding path program 1 times [2020-10-12 20:34:50,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:34:50,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903350267] [2020-10-12 20:34:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:34:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:34:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:52,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:53,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:53,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:55,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:55,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:34:55,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-12 20:34:55,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:34:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 20:34:55,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:34:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:34:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:34:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-12 20:34:55,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:34:56,395 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:34:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:34:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:34:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:34:56,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:34:56,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:34:56,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:34:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:34:56,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:34:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:34:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:34:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:34:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:34:56,641 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 20:34:56,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903350267] [2020-10-12 20:34:56,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:34:56,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:34:56,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592568845] [2020-10-12 20:34:56,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:34:56,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:34:56,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:34:56,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:34:56,644 INFO L87 Difference]: Start difference. First operand 176428 states and 288525 transitions. Second operand 5 states.