/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_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:16:47,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:16:47,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:16:47,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:16:47,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:16:47,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:16:47,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:16:47,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:16:47,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:16:47,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:16:47,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:16:47,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:16:47,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:16:47,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:16:47,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:16:47,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:16:47,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:16:47,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:16:47,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:16:47,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:16:47,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:16:47,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:16:47,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:16:47,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:16:47,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:16:47,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:16:47,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:16:47,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:16:47,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:16:47,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:16:47,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:16:47,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:16:47,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:16:47,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:16:47,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:16:47,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:16:47,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:16:47,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:16:47,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:16:47,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:16:47,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:16:47,568 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 04:16:47,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:16:47,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:16:47,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:16:47,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:16:47,612 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:16:47,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:16:47,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:16:47,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:16:47,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:16:47,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:16:47,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:16:47,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:16:47,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:16:47,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:16:47,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:16:47,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:16:47,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:16:47,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:16:47,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:16:47,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:16:47,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:16:47,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:16:47,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:16:47,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:16:47,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:16:47,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:16:47,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:16:47,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:16:47,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:16:47,618 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 04:16:47,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:16:47,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:16:47,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:16:47,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:16:47,969 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:16:47,970 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 04:16:48,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2774f2b0e/bf89f419e23c4d36ad43beaa36c0cada/FLAG8bcd61886 [2020-10-15 04:16:48,863 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:16:48,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 04:16:48,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2774f2b0e/bf89f419e23c4d36ad43beaa36c0cada/FLAG8bcd61886 [2020-10-15 04:16:48,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2774f2b0e/bf89f419e23c4d36ad43beaa36c0cada [2020-10-15 04:16:48,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:16:48,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:16:48,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:48,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:16:48,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:16:48,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:48" (1/1) ... [2020-10-15 04:16:48,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27abfae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:48, skipping insertion in model container [2020-10-15 04:16:48,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:48" (1/1) ... [2020-10-15 04:16:48,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:16:49,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:16:51,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:51,454 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:16:53,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:53,129 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:16:53,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53 WrapperNode [2020-10-15 04:16:53,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:53,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:16:53,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:16:53,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:16:53,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (1/1) ... [2020-10-15 04:16:53,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (1/1) ... [2020-10-15 04:16:53,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (1/1) ... [2020-10-15 04:16:53,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (1/1) ... [2020-10-15 04:16:53,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (1/1) ... [2020-10-15 04:16:53,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (1/1) ... [2020-10-15 04:16:53,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (1/1) ... [2020-10-15 04:16:53,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:16:53,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:16:53,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:16:53,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:16:53,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (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 04:16:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:16:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:16:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:16:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:16:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:16:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:16:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:16:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:16:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:16:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:16:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:16:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:16:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:16:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:16:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:16:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:16:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:16:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:16:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:16:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:16:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:16:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:16:59,489 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:16:59,489 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:16:59,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:16:59 BoogieIcfgContainer [2020-10-15 04:16:59,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:16:59,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:16:59,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:16:59,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:16:59,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:16:48" (1/3) ... [2020-10-15 04:16:59,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2820b150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:16:59, skipping insertion in model container [2020-10-15 04:16:59,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:53" (2/3) ... [2020-10-15 04:16:59,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2820b150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:16:59, skipping insertion in model container [2020-10-15 04:16:59,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:16:59" (3/3) ... [2020-10-15 04:16:59,514 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 04:16:59,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:16:59,533 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 04:16:59,547 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 04:16:59,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:16:59,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:16:59,578 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:16:59,578 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:16:59,578 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:16:59,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:16:59,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:16:59,579 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:16:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states. [2020-10-15 04:16:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-15 04:16:59,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:59,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:59,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:59,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1936618047, now seen corresponding path program 1 times [2020-10-15 04:16:59,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:59,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528665028] [2020-10-15 04:16:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:03,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:05,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:05,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-15 04:17:05,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:17:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 04:17:05,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:05,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:17:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-15 04:17:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 04:17:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:17:06,609 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-15 04:17:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:06,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:06,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 04:17:06,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:06,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:06,880 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 04:17:06,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528665028] [2020-10-15 04:17:06,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:06,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:17:06,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278581259] [2020-10-15 04:17:06,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:17:06,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:06,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:17:06,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:06,911 INFO L87 Difference]: Start difference. First operand 2515 states. Second operand 4 states. [2020-10-15 04:17:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:25,243 INFO L93 Difference]: Finished difference Result 5720 states and 9914 transitions. [2020-10-15 04:17:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:17:25,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-10-15 04:17:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:25,295 INFO L225 Difference]: With dead ends: 5720 [2020-10-15 04:17:25,295 INFO L226 Difference]: Without dead ends: 4101 [2020-10-15 04:17:25,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2020-10-15 04:17:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4001. [2020-10-15 04:17:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2020-10-15 04:17:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6924 transitions. [2020-10-15 04:17:25,532 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6924 transitions. Word has length 322 [2020-10-15 04:17:25,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:25,533 INFO L479 AbstractCegarLoop]: Abstraction has 4001 states and 6924 transitions. [2020-10-15 04:17:25,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:17:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6924 transitions. [2020-10-15 04:17:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-15 04:17:25,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:25,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:25,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:17:25,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:25,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1879093241, now seen corresponding path program 1 times [2020-10-15 04:17:25,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:25,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899854342] [2020-10-15 04:17:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:26,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:29,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:31,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:31,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-15 04:17:31,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:17:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5426 [2020-10-15 04:17:31,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:31,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:31,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:31,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-15 04:17:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 04:17:32,255 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-15 04:17:32,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:32,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:32,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:32,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:32,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-15 04:17:32,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:32,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:32,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:32,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:32,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:32,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:32,857 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 04:17:32,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899854342] [2020-10-15 04:17:32,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:32,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:32,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659691634] [2020-10-15 04:17:32,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:32,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:32,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:32,865 INFO L87 Difference]: Start difference. First operand 4001 states and 6924 transitions. Second operand 5 states. [2020-10-15 04:18:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:01,188 INFO L93 Difference]: Finished difference Result 11811 states and 20444 transitions. [2020-10-15 04:18:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:01,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-15 04:18:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:01,229 INFO L225 Difference]: With dead ends: 11811 [2020-10-15 04:18:01,230 INFO L226 Difference]: Without dead ends: 7871 [2020-10-15 04:18:01,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7871 states. [2020-10-15 04:18:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7871 to 7867. [2020-10-15 04:18:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7867 states. [2020-10-15 04:18:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7867 states to 7867 states and 13593 transitions. [2020-10-15 04:18:01,639 INFO L78 Accepts]: Start accepts. Automaton has 7867 states and 13593 transitions. Word has length 342 [2020-10-15 04:18:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:01,640 INFO L479 AbstractCegarLoop]: Abstraction has 7867 states and 13593 transitions. [2020-10-15 04:18:01,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand 7867 states and 13593 transitions. [2020-10-15 04:18:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-15 04:18:01,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:01,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:01,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:18:01,667 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:01,667 INFO L82 PathProgramCache]: Analyzing trace with hash -449595756, now seen corresponding path program 1 times [2020-10-15 04:18:01,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:01,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279770401] [2020-10-15 04:18:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:02,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:03,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:04,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:06,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:06,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-15 04:18:06,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:18:06,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-15 04:18:06,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:06,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:18:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:18:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-15 04:18:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:07,862 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-15 04:18:07,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:07,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:07,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:07,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:07,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 04:18:07,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:07,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:07,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:08,136 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 04:18:08,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279770401] [2020-10-15 04:18:08,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:08,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:18:08,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534961599] [2020-10-15 04:18:08,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:18:08,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:08,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:18:08,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:08,141 INFO L87 Difference]: Start difference. First operand 7867 states and 13593 transitions. Second operand 4 states. [2020-10-15 04:18:42,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:42,776 INFO L93 Difference]: Finished difference Result 23171 states and 40029 transitions. [2020-10-15 04:18:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:18:42,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 344 [2020-10-15 04:18:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:42,843 INFO L225 Difference]: With dead ends: 23171 [2020-10-15 04:18:42,843 INFO L226 Difference]: Without dead ends: 15453 [2020-10-15 04:18:42,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15453 states. [2020-10-15 04:18:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15453 to 15449. [2020-10-15 04:18:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15449 states. [2020-10-15 04:18:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15449 states to 15449 states and 26639 transitions. [2020-10-15 04:18:43,749 INFO L78 Accepts]: Start accepts. Automaton has 15449 states and 26639 transitions. Word has length 344 [2020-10-15 04:18:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:43,750 INFO L479 AbstractCegarLoop]: Abstraction has 15449 states and 26639 transitions. [2020-10-15 04:18:43,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:18:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 15449 states and 26639 transitions. [2020-10-15 04:18:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-15 04:18:43,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:43,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:43,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:18:43,791 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:43,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1836304223, now seen corresponding path program 1 times [2020-10-15 04:18:43,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:43,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780066276] [2020-10-15 04:18:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:45,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:48,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-15 04:18:48,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:18:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-15 04:18:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:48,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-15 04:18:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:49,984 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-15 04:18:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:50,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:50,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:50,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:18:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:50,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:50,963 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 04:18:50,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780066276] [2020-10-15 04:18:50,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:50,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:50,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224336981] [2020-10-15 04:18:50,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:50,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:50,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:50,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:50,965 INFO L87 Difference]: Start difference. First operand 15449 states and 26639 transitions. Second operand 5 states. [2020-10-15 04:19:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:19,163 INFO L93 Difference]: Finished difference Result 45708 states and 78820 transitions. [2020-10-15 04:19:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:19,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2020-10-15 04:19:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:19,225 INFO L225 Difference]: With dead ends: 45708 [2020-10-15 04:19:19,226 INFO L226 Difference]: Without dead ends: 30472 [2020-10-15 04:19:19,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:19:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30472 states. [2020-10-15 04:19:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30472 to 30468. [2020-10-15 04:19:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30468 states. [2020-10-15 04:19:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30468 states to 30468 states and 52434 transitions. [2020-10-15 04:19:20,743 INFO L78 Accepts]: Start accepts. Automaton has 30468 states and 52434 transitions. Word has length 345 [2020-10-15 04:19:20,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:20,744 INFO L479 AbstractCegarLoop]: Abstraction has 30468 states and 52434 transitions. [2020-10-15 04:19:20,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:19:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 30468 states and 52434 transitions. [2020-10-15 04:19:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-15 04:19:20,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:20,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:19:20,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:19:20,822 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash -941886682, now seen corresponding path program 1 times [2020-10-15 04:19:20,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:20,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597252910] [2020-10-15 04:19:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:25,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:25,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-15 04:19:25,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:19:25,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-15 04:19:25,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:25,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:19:25,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:19:25,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-15 04:19:25,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:19:26,859 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-15 04:19:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:26,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:26,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:26,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:19:26,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:26,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:19:27,011 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 04:19:27,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597252910] [2020-10-15 04:19:27,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:19:27,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:19:27,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104402814] [2020-10-15 04:19:27,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:19:27,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:19:27,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:19:27,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:19:27,014 INFO L87 Difference]: Start difference. First operand 30468 states and 52434 transitions. Second operand 5 states. [2020-10-15 04:19:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:56,883 INFO L93 Difference]: Finished difference Result 90258 states and 155350 transitions. [2020-10-15 04:19:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:56,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 348 [2020-10-15 04:19:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:57,010 INFO L225 Difference]: With dead ends: 90258 [2020-10-15 04:19:57,010 INFO L226 Difference]: Without dead ends: 59996 [2020-10-15 04:19:57,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:19:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59996 states. [2020-10-15 04:20:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59996 to 59992. [2020-10-15 04:20:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59992 states. [2020-10-15 04:20:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59992 states to 59992 states and 102996 transitions. [2020-10-15 04:20:00,321 INFO L78 Accepts]: Start accepts. Automaton has 59992 states and 102996 transitions. Word has length 348 [2020-10-15 04:20:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:20:00,321 INFO L479 AbstractCegarLoop]: Abstraction has 59992 states and 102996 transitions. [2020-10-15 04:20:00,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:20:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 59992 states and 102996 transitions. [2020-10-15 04:20:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-15 04:20:00,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:20:00,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:20:00,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:20:00,396 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:20:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:20:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 154109986, now seen corresponding path program 1 times [2020-10-15 04:20:00,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:20:00,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015921082] [2020-10-15 04:20:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:20:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:20:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:01,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:01,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:20:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-15 04:20:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:20:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-15 04:20:05,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:20:05,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:20:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:20:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:20:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 04:20:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:20:06,469 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-15 04:20:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:20:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:20:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:06,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:20:06,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:20:06,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:20:06,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:20:06,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:20:06,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:20:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:20:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:20:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:20:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:20:06,703 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 04:20:06,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015921082] [2020-10-15 04:20:06,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:20:06,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:20:06,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550728613] [2020-10-15 04:20:06,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:20:06,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:20:06,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:20:06,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:20:06,708 INFO L87 Difference]: Start difference. First operand 59992 states and 102996 transitions. Second operand 5 states.