/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:03:34,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:03:34,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:03:34,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:03:34,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:03:34,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:03:34,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:03:34,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:03:34,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:03:34,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:03:34,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:03:34,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:03:34,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:03:34,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:03:34,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:03:34,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:03:34,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:03:34,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:03:34,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:03:34,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:03:34,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:03:34,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:03:34,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:03:34,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:03:34,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:03:34,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:03:34,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:03:34,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:03:34,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:03:34,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:03:34,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:03:34,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:03:34,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:03:34,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:03:34,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:03:34,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:03:34,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:03:34,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:03:34,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:03:34,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:03:34,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:03:34,314 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 [2020-10-15 03:03:34,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:03:34,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:03:34,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:03:34,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:03:34,353 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:03:34,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:03:34,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:03:34,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:03:34,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:03:34,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:03:34,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:03:34,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:03:34,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:03:34,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:03:34,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:03:34,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:03:34,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:03:34,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:03:34,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:03:34,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:03:34,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:03:34,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:03:34,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:03:34,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:03:34,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:03:34,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:03:34,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:03:34,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:03:34,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:03:34,360 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:03:34,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:03:34,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:03:34,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:03:34,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:03:34,749 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:03:34,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:03:34,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ebffa944/0de68e15ebd04151be8e8d792619eb15/FLAGc24b2cf9d [2020-10-15 03:03:35,491 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:03:35,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:03:35,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ebffa944/0de68e15ebd04151be8e8d792619eb15/FLAGc24b2cf9d [2020-10-15 03:03:35,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ebffa944/0de68e15ebd04151be8e8d792619eb15 [2020-10-15 03:03:35,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:03:35,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:03:35,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:03:35,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:03:35,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:03:35,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:35" (1/1) ... [2020-10-15 03:03:35,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa36c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:35, skipping insertion in model container [2020-10-15 03:03:35,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:35" (1/1) ... [2020-10-15 03:03:35,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:03:35,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:03:36,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:03:36,640 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:03:37,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:03:37,107 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:03:37,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37 WrapperNode [2020-10-15 03:03:37,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:03:37,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:03:37,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:03:37,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:03:37,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:03:37,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:03:37,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:03:37,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:03:37,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (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 [2020-10-15 03:03:37,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:03:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:03:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:03:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:03:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:03:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:03:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:03:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:03:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:03:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:03:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:03:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:03:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:03:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:03:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:03:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:03:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:03:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:03:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:03:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:03:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:03:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:03:39,551 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:03:39,551 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:03:39,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:39 BoogieIcfgContainer [2020-10-15 03:03:39,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:03:39,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:03:39,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:03:39,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:03:39,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:03:35" (1/3) ... [2020-10-15 03:03:39,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b209483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:39, skipping insertion in model container [2020-10-15 03:03:39,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (2/3) ... [2020-10-15 03:03:39,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b209483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:39, skipping insertion in model container [2020-10-15 03:03:39,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:39" (3/3) ... [2020-10-15 03:03:39,570 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:03:39,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:03:39,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:03:39,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:03:39,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:03:39,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:03:39,636 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:03:39,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:03:39,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:03:39,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:03:39,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:03:39,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:03:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states. [2020-10-15 03:03:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-15 03:03:39,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:39,693 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] [2020-10-15 03:03:39,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:39,700 INFO L82 PathProgramCache]: Analyzing trace with hash -310737882, now seen corresponding path program 1 times [2020-10-15 03:03:39,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:39,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506040215] [2020-10-15 03:03:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:42,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:43,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:45,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:45,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-15 03:03:45,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:03:45,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-15 03:03:45,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:45,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:45,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:45,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:45,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 03:03:45,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:03:46,547 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:03:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:46,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:46,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:03:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:46,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:46,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506040215] [2020-10-15 03:03:46,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:46,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:46,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092103427] [2020-10-15 03:03:46,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:46,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:46,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:46,888 INFO L87 Difference]: Start difference. First operand 597 states. Second operand 5 states. [2020-10-15 03:03:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:54,104 INFO L93 Difference]: Finished difference Result 1714 states and 3050 transitions. [2020-10-15 03:03:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:03:54,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-15 03:03:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:54,140 INFO L225 Difference]: With dead ends: 1714 [2020-10-15 03:03:54,140 INFO L226 Difference]: Without dead ends: 1154 [2020-10-15 03:03:54,153 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 [2020-10-15 03:03:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2020-10-15 03:03:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1152. [2020-10-15 03:03:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2020-10-15 03:03:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1791 transitions. [2020-10-15 03:03:54,328 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1791 transitions. Word has length 242 [2020-10-15 03:03:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:54,329 INFO L479 AbstractCegarLoop]: Abstraction has 1152 states and 1791 transitions. [2020-10-15 03:03:54,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1791 transitions. [2020-10-15 03:03:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-15 03:03:54,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:54,338 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] [2020-10-15 03:03:54,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:03:54,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash -2042535150, now seen corresponding path program 1 times [2020-10-15 03:03:54,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:54,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067057767] [2020-10-15 03:03:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:54,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:55,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:59,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:59,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:59,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-15 03:03:59,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:03:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 03:03:59,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:59,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:03:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 03:03:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-15 03:03:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:00,056 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:04:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:00,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:00,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:00,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:00,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:04:00,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:00,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:00,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:00,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067057767] [2020-10-15 03:04:00,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:00,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:04:00,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611349477] [2020-10-15 03:04:00,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:04:00,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:00,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:04:00,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:04:00,282 INFO L87 Difference]: Start difference. First operand 1152 states and 1791 transitions. Second operand 4 states. [2020-10-15 03:04:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:07,327 INFO L93 Difference]: Finished difference Result 3210 states and 4946 transitions. [2020-10-15 03:04:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:04:07,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2020-10-15 03:04:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:07,344 INFO L225 Difference]: With dead ends: 3210 [2020-10-15 03:04:07,344 INFO L226 Difference]: Without dead ends: 2179 [2020-10-15 03:04:07,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:04:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2020-10-15 03:04:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 2177. [2020-10-15 03:04:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2177 states. [2020-10-15 03:04:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3349 transitions. [2020-10-15 03:04:07,499 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3349 transitions. Word has length 244 [2020-10-15 03:04:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:07,501 INFO L479 AbstractCegarLoop]: Abstraction has 2177 states and 3349 transitions. [2020-10-15 03:04:07,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:04:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3349 transitions. [2020-10-15 03:04:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-15 03:04:07,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:07,508 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] [2020-10-15 03:04:07,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:04:07,509 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:07,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1102949015, now seen corresponding path program 1 times [2020-10-15 03:04:07,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:07,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418586536] [2020-10-15 03:04:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:07,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:07,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:08,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:11,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:11,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:12,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:12,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-15 03:04:12,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:04:12,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 03:04:12,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:12,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:12,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 03:04:12,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:13,309 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:04:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:13,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:13,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:13,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:04:13,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:13,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:13,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418586536] [2020-10-15 03:04:13,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:13,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:13,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561046925] [2020-10-15 03:04:13,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:13,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:13,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:13,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:13,573 INFO L87 Difference]: Start difference. First operand 2177 states and 3349 transitions. Second operand 5 states. [2020-10-15 03:04:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:21,118 INFO L93 Difference]: Finished difference Result 6365 states and 9763 transitions. [2020-10-15 03:04:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:21,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-15 03:04:21,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:21,146 INFO L225 Difference]: With dead ends: 6365 [2020-10-15 03:04:21,147 INFO L226 Difference]: Without dead ends: 4247 [2020-10-15 03:04:21,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:21,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2020-10-15 03:04:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4245. [2020-10-15 03:04:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4245 states. [2020-10-15 03:04:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4245 states to 4245 states and 6471 transitions. [2020-10-15 03:04:21,392 INFO L78 Accepts]: Start accepts. Automaton has 4245 states and 6471 transitions. Word has length 244 [2020-10-15 03:04:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:21,394 INFO L479 AbstractCegarLoop]: Abstraction has 4245 states and 6471 transitions. [2020-10-15 03:04:21,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4245 states and 6471 transitions. [2020-10-15 03:04:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-15 03:04:21,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:21,423 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] [2020-10-15 03:04:21,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:04:21,423 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash 549883703, now seen corresponding path program 1 times [2020-10-15 03:04:21,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:21,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89522171] [2020-10-15 03:04:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:21,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:23,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:26,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:26,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-15 03:04:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:04:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-15 03:04:26,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:26,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:04:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 03:04:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 03:04:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:27,206 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:04:27,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:27,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:27,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:27,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:27,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:04:27,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:27,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:27,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:27,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89522171] [2020-10-15 03:04:27,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:27,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:04:27,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661080102] [2020-10-15 03:04:27,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:04:27,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:27,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:04:27,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:04:27,428 INFO L87 Difference]: Start difference. First operand 4245 states and 6471 transitions. Second operand 4 states. [2020-10-15 03:04:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:34,122 INFO L93 Difference]: Finished difference Result 12169 states and 18453 transitions. [2020-10-15 03:04:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:04:34,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 246 [2020-10-15 03:04:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:34,156 INFO L225 Difference]: With dead ends: 12169 [2020-10-15 03:04:34,156 INFO L226 Difference]: Without dead ends: 8275 [2020-10-15 03:04:34,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:04:34,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2020-10-15 03:04:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8273. [2020-10-15 03:04:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8273 states. [2020-10-15 03:04:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8273 states to 8273 states and 12513 transitions. [2020-10-15 03:04:34,517 INFO L78 Accepts]: Start accepts. Automaton has 8273 states and 12513 transitions. Word has length 246 [2020-10-15 03:04:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:34,518 INFO L479 AbstractCegarLoop]: Abstraction has 8273 states and 12513 transitions. [2020-10-15 03:04:34,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:04:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8273 states and 12513 transitions. [2020-10-15 03:04:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-15 03:04:34,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:34,537 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] [2020-10-15 03:04:34,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:04:34,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:34,539 INFO L82 PathProgramCache]: Analyzing trace with hash 185674684, now seen corresponding path program 1 times [2020-10-15 03:04:34,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:34,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658978535] [2020-10-15 03:04:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:34,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:34,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:35,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:39,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:39,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-15 03:04:39,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:04:39,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 03:04:39,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:39,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 03:04:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:04:40,541 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:04:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:40,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:40,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:40,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:04:40,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:40,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:40,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:40,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:40,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658978535] [2020-10-15 03:04:40,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:40,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:40,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382515940] [2020-10-15 03:04:40,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:40,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:40,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:40,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:40,704 INFO L87 Difference]: Start difference. First operand 8273 states and 12513 transitions. Second operand 5 states. [2020-10-15 03:04:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:47,616 INFO L93 Difference]: Finished difference Result 24221 states and 36523 transitions. [2020-10-15 03:04:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:47,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-15 03:04:47,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:47,707 INFO L225 Difference]: With dead ends: 24221 [2020-10-15 03:04:47,708 INFO L226 Difference]: Without dead ends: 16135 [2020-10-15 03:04:47,725 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 [2020-10-15 03:04:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16135 states. [2020-10-15 03:04:48,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16135 to 16133. [2020-10-15 03:04:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16133 states. [2020-10-15 03:04:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 24165 transitions. [2020-10-15 03:04:48,537 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 24165 transitions. Word has length 246 [2020-10-15 03:04:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:48,537 INFO L479 AbstractCegarLoop]: Abstraction has 16133 states and 24165 transitions. [2020-10-15 03:04:48,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 24165 transitions. [2020-10-15 03:04:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-15 03:04:48,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:48,571 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] [2020-10-15 03:04:48,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:04:48,571 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1617040098, now seen corresponding path program 1 times [2020-10-15 03:04:48,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:48,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713093528] [2020-10-15 03:04:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:48,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:49,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:49,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:53,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:53,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-15 03:04:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:04:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 03:04:53,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:53,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:04:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 03:04:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 03:04:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:54,643 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:04:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:54,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:54,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:54,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:54,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:04:54,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:54,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:54,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:54,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713093528] [2020-10-15 03:04:54,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:54,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:04:54,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262091994] [2020-10-15 03:04:54,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:04:54,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:04:54,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:04:54,772 INFO L87 Difference]: Start difference. First operand 16133 states and 24165 transitions. Second operand 4 states. [2020-10-15 03:05:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:02,926 INFO L93 Difference]: Finished difference Result 45747 states and 68015 transitions. [2020-10-15 03:05:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:05:02,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2020-10-15 03:05:02,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:03,001 INFO L225 Difference]: With dead ends: 45747 [2020-10-15 03:05:03,001 INFO L226 Difference]: Without dead ends: 31221 [2020-10-15 03:05:03,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:05:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31221 states. [2020-10-15 03:05:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31221 to 31219. [2020-10-15 03:05:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31219 states. [2020-10-15 03:05:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31219 states to 31219 states and 46337 transitions. [2020-10-15 03:05:05,182 INFO L78 Accepts]: Start accepts. Automaton has 31219 states and 46337 transitions. Word has length 248 [2020-10-15 03:05:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:05,182 INFO L479 AbstractCegarLoop]: Abstraction has 31219 states and 46337 transitions. [2020-10-15 03:05:05,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:05:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 31219 states and 46337 transitions. [2020-10-15 03:05:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-15 03:05:05,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:05,236 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] [2020-10-15 03:05:05,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:05:05,236 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:05,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1293650009, now seen corresponding path program 1 times [2020-10-15 03:05:05,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:05,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207975269] [2020-10-15 03:05:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:05,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:10,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-15 03:05:10,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:05:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:05:10,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:10,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:05:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:10,881 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:05:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:10,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:10,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:10,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:10,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:05:10,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:10,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:10,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:10,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207975269] [2020-10-15 03:05:10,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:10,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:10,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572581276] [2020-10-15 03:05:10,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:10,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:10,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:10,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:10,980 INFO L87 Difference]: Start difference. First operand 31219 states and 46337 transitions. Second operand 5 states. [2020-10-15 03:05:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:18,380 INFO L93 Difference]: Finished difference Result 92406 states and 136999 transitions. [2020-10-15 03:05:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:18,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-15 03:05:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:18,573 INFO L225 Difference]: With dead ends: 92406 [2020-10-15 03:05:18,574 INFO L226 Difference]: Without dead ends: 61216 [2020-10-15 03:05:18,642 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 [2020-10-15 03:05:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61216 states. [2020-10-15 03:05:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61216 to 61214. [2020-10-15 03:05:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61214 states. [2020-10-15 03:05:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61214 states to 61214 states and 90143 transitions. [2020-10-15 03:05:21,122 INFO L78 Accepts]: Start accepts. Automaton has 61214 states and 90143 transitions. Word has length 248 [2020-10-15 03:05:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:21,122 INFO L479 AbstractCegarLoop]: Abstraction has 61214 states and 90143 transitions. [2020-10-15 03:05:21,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 61214 states and 90143 transitions. [2020-10-15 03:05:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-15 03:05:21,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:21,189 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] [2020-10-15 03:05:21,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:05:21,189 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:21,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:21,190 INFO L82 PathProgramCache]: Analyzing trace with hash -252915934, now seen corresponding path program 1 times [2020-10-15 03:05:21,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:21,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819103523] [2020-10-15 03:05:21,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:21,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:21,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:22,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:22,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:25,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:26,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:26,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-15 03:05:26,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:05:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:05:26,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:26,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-15 03:05:26,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:27,076 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:05:27,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:27,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:27,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:27,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:05:27,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:27,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:27,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819103523] [2020-10-15 03:05:27,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:27,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:27,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161701035] [2020-10-15 03:05:27,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:27,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:27,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:27,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:27,213 INFO L87 Difference]: Start difference. First operand 61214 states and 90143 transitions. Second operand 5 states. [2020-10-15 03:05:37,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:37,423 INFO L93 Difference]: Finished difference Result 178535 states and 262014 transitions. [2020-10-15 03:05:37,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:37,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-15 03:05:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:37,593 INFO L225 Difference]: With dead ends: 178535 [2020-10-15 03:05:37,593 INFO L226 Difference]: Without dead ends: 117820 [2020-10-15 03:05:37,671 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 [2020-10-15 03:05:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117820 states. [2020-10-15 03:05:44,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117820 to 117818. [2020-10-15 03:05:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117818 states. [2020-10-15 03:05:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117818 states to 117818 states and 171575 transitions. [2020-10-15 03:05:44,797 INFO L78 Accepts]: Start accepts. Automaton has 117818 states and 171575 transitions. Word has length 250 [2020-10-15 03:05:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:44,797 INFO L479 AbstractCegarLoop]: Abstraction has 117818 states and 171575 transitions. [2020-10-15 03:05:44,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 117818 states and 171575 transitions. [2020-10-15 03:05:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-15 03:05:44,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:44,937 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] [2020-10-15 03:05:44,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:05:44,937 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:44,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1203291306, now seen corresponding path program 1 times [2020-10-15 03:05:44,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:44,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195577304] [2020-10-15 03:05:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:45,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:47,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:49,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:49,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-15 03:05:49,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:05:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:05:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:49,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:05:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:05:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 03:05:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:50,674 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:05:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:50,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:50,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:05:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:50,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:50,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195577304] [2020-10-15 03:05:50,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:50,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:05:50,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169758936] [2020-10-15 03:05:50,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:05:50,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:50,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:05:50,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:05:50,801 INFO L87 Difference]: Start difference. First operand 117818 states and 171575 transitions. Second operand 4 states. [2020-10-15 03:06:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:09,018 INFO L93 Difference]: Finished difference Result 344668 states and 500405 transitions. [2020-10-15 03:06:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:06:09,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 252 [2020-10-15 03:06:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:09,374 INFO L225 Difference]: With dead ends: 344668 [2020-10-15 03:06:09,374 INFO L226 Difference]: Without dead ends: 231323 [2020-10-15 03:06:09,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:06:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231323 states. [2020-10-15 03:06:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231323 to 231321. [2020-10-15 03:06:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231321 states. [2020-10-15 03:06:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231321 states to 231321 states and 334195 transitions. [2020-10-15 03:06:22,584 INFO L78 Accepts]: Start accepts. Automaton has 231321 states and 334195 transitions. Word has length 252 [2020-10-15 03:06:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:22,585 INFO L479 AbstractCegarLoop]: Abstraction has 231321 states and 334195 transitions. [2020-10-15 03:06:22,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:06:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand 231321 states and 334195 transitions. [2020-10-15 03:06:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-15 03:06:22,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:22,778 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] [2020-10-15 03:06:22,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:06:22,778 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:22,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:22,778 INFO L82 PathProgramCache]: Analyzing trace with hash 660900763, now seen corresponding path program 1 times [2020-10-15 03:06:22,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:22,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202837394] [2020-10-15 03:06:22,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:22,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:22,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:23,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:23,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:27,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:27,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-15 03:06:27,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:06:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:06:27,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:27,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 03:06:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:28,511 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:06:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:28,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:28,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:06:28,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:28,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:28,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202837394] [2020-10-15 03:06:28,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:28,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:28,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052310063] [2020-10-15 03:06:28,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:28,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:28,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:28,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:28,639 INFO L87 Difference]: Start difference. First operand 231321 states and 334195 transitions. Second operand 5 states. [2020-10-15 03:06:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:45,600 INFO L93 Difference]: Finished difference Result 493994 states and 713494 transitions. [2020-10-15 03:06:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:45,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-15 03:06:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:46,497 INFO L225 Difference]: With dead ends: 493994 [2020-10-15 03:06:46,498 INFO L226 Difference]: Without dead ends: 262989 [2020-10-15 03:06:46,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262989 states. [2020-10-15 03:07:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262989 to 234824. [2020-10-15 03:07:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234824 states. [2020-10-15 03:07:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234824 states to 234824 states and 339879 transitions. [2020-10-15 03:07:03,450 INFO L78 Accepts]: Start accepts. Automaton has 234824 states and 339879 transitions. Word has length 252 [2020-10-15 03:07:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:03,450 INFO L479 AbstractCegarLoop]: Abstraction has 234824 states and 339879 transitions. [2020-10-15 03:07:03,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 234824 states and 339879 transitions. [2020-10-15 03:07:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-15 03:07:03,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:03,646 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] [2020-10-15 03:07:03,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:07:03,646 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:03,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:03,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2145169503, now seen corresponding path program 1 times [2020-10-15 03:07:03,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:03,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472088285] [2020-10-15 03:07:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:08,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:08,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-15 03:07:08,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:07:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:07:08,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:08,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 03:07:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:09,493 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 03:07:09,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:09,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:09,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:07:09,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:09,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:09,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472088285] [2020-10-15 03:07:09,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:09,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:09,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017402623] [2020-10-15 03:07:09,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:09,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:09,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:09,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:09,608 INFO L87 Difference]: Start difference. First operand 234824 states and 339879 transitions. Second operand 5 states.